September 1-5: 34th International Conference on Diamond and Carbon Materials(ICDCM 2024)(Dresden, Germany)

• Y. Saito, Y. Makino, T. Horai, Y. Minowa, H. Ishihara, M. Ashida,
  Selective manipulation of nanodiamonds by resonant optical force,
  06A.03, 2024/9/3.
  
  
  
  

  December 1-6: MRS Fall Meeting & Exhibit (Boston, USA)
  

  
  
  • Y. Saito, Y. Makino, T. Horai, Y. Minowa, H. Ishihara, M. Ashida,
    Selection of Fluorescent Nanodiamonds Based on Optical Properties by Resonant Optical Force,
    EL08.08.07, 2024/12/3.
    
    
    

  2023

September 10-14: 33rd International Conference on Diamond and Carbon Materials (ICDCM 2023) (Mallorca, Spain)

• Y. Makino, M. Ashida, S. Tanaka, K. Hokamoto, N. Okuyama, T. Yoshikawa,
  Direct synthesis of nanodiamonds containing silicon- or germanium-vacancy centers via detonation techniques,
  P5.19, 2023/9/11.
  
  

  September 17-23: The 2023 48th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz2023) ( Montreal, Canada)
  

  
  
  • Masaya Nagai, Yuhei Higashitani, Masaaki Ashida, Koichi Kusakabe, Hirohiko Niioka, Azusa N. Hattori, Hidekazu Tanaka, Goro Isoyama, and Norimasa Ozaki ,
    Martensite transformation triggered with intense THz pulses (Keynote talk),
    We-PM1-2-6, 2023/9/20.
    
    Masaya Nagai, Hikaru Takehara, Masaaki Ashida, Yuji Okuyama, and Yukimune Kani,
    Strong Proton-Phonon Coupling in Perovskite-type Electrolyte of Proton-Conducting Fuel Cell ,
    Th-AM-3-3, 2023/9/21.
    
    

  2022

July 31- Aug5 : The 15th Pacific Rim Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR 2022)（Sapporo）

• E. Matsubara, M. Ashida,
  Ultrabroadband infrared coherent spectroscopy using solids as nonlinear media,
  CTuP3C-04, 2022/8/2.
  
  

  Nov 27-Dec 2 : 2022 MRS Fall Meeting (Boston, USA)
  

  
  
  • Y. Saito, Y. Makino, Y. Minowa, and M. Ashida,
    Optical Properties of Silicon Vacancy (SiV) Centers in Nanodiamonds Fabricated by Detonation Process,
    2022/11/29.
    
    
  　

  2021

June 7–9: 14th International Conference on New Diamond and Nano Carbons 2020/2021(Online)

• Y. Makino, S. Tanaka, T. Mahiko, T. Kouuchi, K. Kusakabe, K. Hokamoto, M. Ashida,
  On the Mechanism of Nanodiamond Formation during Detonation Synthesis Using Time-Resolved Optical Emission Spectroscopy,
  2021/6/7.
  
  

2020

November 8-13: The 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2020) (A virtual event hosted from Buffalo, USA)

• E. Matsubara, M. Ashida
  Generation Of Ultrabroadband Coherent Infrared Pulses Of The Frequency Range Of 1—200 THz Using Multiplate-Compressed Driving Pulses,
  2020/9/9.
  
  E. Matsubara, M. Nagai, M. Ashida
  Gapless Sensitive Detection Of Ultrabroadband Infrared Pulses Using Single Crystal Of Diamond,
  2020/9/10.
  
  

  2019 April 22-26: The 6th Optical Manipulation Conference (OMC2019) (Yokohama) Y. Minowa, X. Geng, K. Kokado, M. Ashida, Optical trapping in extreme conditions, 2019/4/24. M. Takamune, J. Naoi, S. Sasaki, M. Kumakura, M. Ashida, Y. Moriwaki, What will be done with the magnetically trapped superconducting micro particle?, 2018/4/25. MAY10-15:CLEO2019(San Jose, USA) M. Ichimiya, T. Matsuda, H. Ishihara, M. Ashida, Ultrafast Photoluminescence without Phonon Scattering Due to Nonlocal Light-Matter Interaction, 2019/5/15. E. Matsubara, M. Nagai, M. Ashida, Solid-state Biased Coherent Detection of Ultrabroadband Infrared Pulses Using Single Crystal of Diamond, 2019/5/15. August 23-27: SPIE Nanoscience + Engineering, 2019, Optical Trapping and Optical Micromanipulation XVI (San Diego, USA) M. Ashida, J. Naoi, M. Takamune, Y. Takahashi, S. Sasaki, M. Kumakura, Y. Moriwaki, Optical manipulation of magnetically trapped superconducting micro particles in superfluid helium, 2019/8/13. September 1-6: The 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2019) (Paris, France) M. Nagai, A. Nakane, H. Suzukawa, T. Morimoto, M. Ashida, Terahertz Time-domain Magneto-optic Spectroscopy Without The Polarization-resolution Technique, 2019/9/2. H. Takehara, T. Morimoto, M. Nagai, M. Ashida, Y. Okuyama, Y. Kani, Terahertz Proton Motions In Proton-Conducting Electrolyte Of Solid Oxide Fuel Celll, 2019/9/4. 2018 April 23-27: The 5th Optical Manipulation and Structured Materials Conference (OMC2018) (Yokohama) Y. Minowa, T. Suzuki, K. Setoura, S. Ito, H. Miyasaka, M. Ashida, Fabrication of Cadmium Selenide Quantum Dots with Laser Ablation in Superfluid Helium, 2018/4/26. J. Naoi, Y. Takahashi, M. Takamune,Y. Nakamura, M. Kumakura, M. Ashida, F. Matsushima, Y. Moriwaki, Superconducting Sub-micron Particles Superconducting Sub-micron Particles, 2018/4/26. May 13-18: CLEO2018　(San Jose, USA) M. Ichimiya, T. Matsuda, T. Kinoshita, T. Takahashi, M. Nakayama, H. Ishihara, M. Ashida, Ultrafast Optical Response Due to Nonlocal Interaction between Light and Excitons in ZnO Thin Films, 2018/5/16. W. Zhang, R. Mendis, A. Charous, M. Nagai, and D. Mittleman, Extraordinary Optical Reflection and Giant Goos-Hänchen Effect from a Periodic Array of Thin Metal Plates, 2018/5/16. July 8-13: The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials (EXCON 2018)(Nara Kasugano International Forum, Nara) X. Geng ,Y. Minowa,M. Ashida, Optical trapping of sub-micro particles in superfluid helium, 2018/7/10. A. Tatemoto, Y. Minowa, M. Ashida, Characterization of inner structure and optical properties of semiconductor microspheres, 2018/7/12. Y. Minowa, T. Suzuki, K. Setoura, S. Ito, H. Miyasaka, M. Ashida, Semiconductor quantum dots fabricated via laser ablation in superfluid helium, 2018/7/12. August 1-4: Progress In Electromagnetics Research Symposium (Toyama) Invited M. NAGAI, E. MATSUBARA, M. ASHIDA, M. FUYUKI, K. KAWASE, A. IRIZAWA, G. ISOYAMA, J. AOKI, M. TOYODA, THz-induced Spallation in the Solids, 2018/8/3. August : International Nanophotonics and Nanoenergy Conference2018, (Seoul,Korea) Invited A. N. Hattori, T. V. A. Ngyuen, M. Nagai, M. Ashida, H. Tanaka, Investigation of transport dynamics for the phase-separated nanodomains in strongly correlated manganite, 2018/8. September 9-14: The 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2018) (Nagoya, Japan) Masaya Nagai, Eiichi Matsubara, Masaaki Ashida, Masanori Fuyuki, Keigo Kawase, Akinori Irizawa, Goro Isoyama, Jun Aoki, Michisato Toyoda, Mass Spectrometry For The Organic Solids Using An Intense THz Free Electron Laser Pulse, 2018/9/10. Keita Miyagawa, Masaya Nagai, Changsu Kim, Hidefumi Akiyama, Yoshihiko Kanemitsu, Masaaki Ashida, Visualization Of The Internal Field In The GaAsbased Solar Cell Under Its Operating Condition With Terahertz Radiation, 2018/9/10. Tomohide Morimoto, Masaya Nagai, Masaaki Ashida, Yoichiro Yokotani, Yuji Okuyama, Yukimune Kani, Picoseconds Ion Motions In Materials For Solid Oxide Fuel Cell, 2018/9/10. Atsushi Nakane, Tomohide Morimoto, Masaya Nagai, Masaaki Ashida, Simple THz Faraday Spectroscopic System Using A Phase Shifter, 2018/9/12. Eiichi Matsubara, Masaya Nagai, Masaaki Ashida, Responsibility Of Plasma Current For The Generation Of The Highest Frequency Part Of Ultrabroadband Coherent Infrared Pulses With 200-THz Bandwidth, 2018/9/14. November 26-30: 2018 MRS Fall Meeting (Boston, USA) Mai Huong Duong, Shunpei Nobusue, Eiichi Matsubara, Hirokazu Tada, Masaaki Ashida, Optical Properties of One-Dimensional Single Crystals Based on Lead -Bromide Hybrid Perovskites, 2018/11/28. February 2-7: Photonics West 2019(SPIE) (San Francisco, USA) Takuya Matsuda, Takashi Kinoshita,Masaaki Nakayama,Hajime Ishihara,Masaaki Ashida, Femtosecond radiative decay of two excitons coupled via radiation-induced interaction in ZnO thin films, 2019/2/4. 2017 April 2-7: The seventh international conference on Optical Terahertz Science and Technology (OTST2017) (London, UK) T. Morimoto, M. Nagai and M. Ashida Magneto-THz spectroscopy of the photoexcited semiconductor, PS2:28 2017/4/4. R. Mendis, M. Nagai, W. Zhang and D. Mittleman Artificial dielectric polarizing beam splitter for the THz region, PS2:30 2017/4/4. M. Nagai, E. Matsubara, M. Ashida, M. Fuyuki, K. Kawase, A. Irizawa, G. Isoyama, J. Aoki and M. Toyoda Soft desorption from the hydrogen bonded solids using intense THz pulses, 2017/4/5. K Miyagawa, G Yamashita, M Nagai, C Kim, H Akiyama, Y Kanemitsu and M Ashida, Photocarriers in the GaAs-based photovoltaic device evaluated with the pulsed THz emission, PS3:20 2017/4/6. April 19-21: The 4th Optical Manipulation Conference (OMC2017) (Yokohama) Yosuke Minowa, Yuya Oguni, Masaaki Ashida, Fabrication of semiconductor microspheres with laser ablation in superfluid helium , 2017/4/20. May 14-19: CLEO 2017 (San Jose Convention Center, USA) Masaaki Ashida, Yosuke Minowa, Mitsutaka Kumakura, Yuta Takahashi, Fusakazu Matsushima, and Yoshiki Moriwaki, Fabrication of Superconducting Micro Particles by Laser Ablation in Superfluid Helium, 2017/5/18. Rajind Mendis, Masaya Nagai, Wei Zhang, Daniel M. Mittleman, Artificial Dielectric Polarizing Beam Splitter for the THz Region, 2017/5/15. July 4-6: 2017 Hsinchu Summer Course and Workshop(Hsinchu City, Taiwan） Invited Masaaki Ashida,Yosuke Minowa, Mitsutaka Kumakura, and Yoshiki Moriwaki, Optical fabrication and　manipulation of semiconductor or superconducting nano- and micro-particles, 2017/7/4. July 31-August.4: 29th International Conference on Defects in Semiconductors(ICDS2017) (Matsue,Lapan) T. Inaba, T. Kojima, G Yamashita, M. Ashida, Y. Fujiwara, Quantitative evaluation of energy transfer efficiency for Eu-doped GaN grown at different V/III ratios, 2017/8/1. August 5-12: SPIE Nanoscience + Engineering 2017 (San Diego, USA） Masaaki Ashida, Optical fabrication and trapping of superconducting nanoparticles in superfluid helium, 2017/8/9. August 27-Sep.1: The 42th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2017) (Cancun, Mexico) Masaya Nagai, Eiichi Matsubara, Masaaki Ashida, Masanori Fuyuki, Keigo Kawase, Akinori Irizawa, Goro Isoyama, Jun Aoki , Michisato Toyoda, MC2.2:Excitation Frequency Dependence Of The Desorption Of Hydrogen-bonded Solids Using Picosecond THz Free Electron Laser Pulses, 2017/8/28. Rajind Mendis, Masaya Nagai, Wei Zhang, Daniel Mittleman, MC3.3: THz Artificial Dielectric Isolator, 2017/8/28. Wei Zhang, Rajind Mendis, Masaya Nagai, Daniel Mittleman, MC3.4: Terahertz Extraordinary Optical Reflection From Parallel-Plate Waveguide Arrays, 2017/8/28. Keita Miyagawa, Genki Yamashita, Masaya Nagai, Hidefumi Akiyama, Changsu Kim, Yoshihiko Kanemitsu, Masaaki Ashida, WC4.3: Structure Dependence Of The Waveforms Of THz Radiation From GaAs-based Photovoltaic Devices, 2017/8/30. Eiichi Matsubara, Masaya Nagai, Masaaki Ashida, RA1.5: Mechanism For Intensity Enhancement Of Ultrabroadband Coherent Infrared Pulses From Two-color Excited Air Plasma, 2017/8/31. September 19-20: 2nd International workshop on CSR and free electron lasers from ultra short bunch electron beam (ELPH Tohoku University） Invited Masaya Nagai, Nonresonantly driven electrons and resonantly driven molecules in the solid under the irradiation of the THz-FEL, 2017/9/19. October 2-6: EMN Meeting On Ultrafast 2017 (Orland, USA) invited Masaaki Ashida, Ultrafast terahertz spectroscopy, 2017/10/4. October 30-Nov.2: Optics & Photonics Japan(OPJ)(Tokyo,Japan) Masaaki Ashida,Yosuke Minowa, Mitsutaka Kumakura, and Yoshiki Moriwaki, Optical fabrication and trapping of microspheres in cryogenic conditions , 2017/10/30. November 20-23: 4th International Symposium on Microwave/Terahertz Science and Applications (MTSA 2017) (Okayama,Japan) invited Masaaki Ashida, Eiichi Matsubara, and Masaya Nagai, Extreme terahertz spectroscopy with highly intense and ultrabroadband sources , 2017/11/22. Janualy 27-February1: SPIE Photonics West　2018 (California, USA) Masaaki Ashida, Yosuke Minowa,Mitsutaka Kumakura,Yoshiki Moriwaki, Optical and magnetic sorting of nanoparticles in cryogenic conditions, 2018/1/31. 2016 May 8-11: 5th EOS Topical Meeting on Terahertz Science & Technology (TST 2016) (Pecs, Hungary ) H. Hoshina, H. Suzuki, C. Otani, M. Nagai, K Kawase, A Irizawa, G. Isoyama, Polymer Morphological Change Induced by Terahertz Irradiation, 2016/5/9. May 14-18: Energy Materials Nanotechnology (EMN) meeting on Terahertz (San Sebastian, Spain) Invited M. Nagai, THz Time-Domain Spectroscopy Using a Phase Shifter based on the Stacked Metal Plates, 2016/5/16. 5月19日-20日: Optical manipulation and its satellite topics (OMC'16) (Yokohama) Y. Minowa, Y. Toyota and M. Ashida, OMC4-1: Tuning of whispering gallery modes of microspheres during optical levitation , 2016/5/19. M. Ashida, Y. Minowa, and H. Ishihara, OMC5-2: Optical fabrication and manipulation of semiconductor nanoparticles in superfluid helium, 2016/5/20. 5月29日-6月3日: Low-Energy Electrodynamics in Solids (LEES 2016) (Hotel LAFORET Biwako, Moriyama, Shiga, JAPAN) A. N. Hattori, T. V. A. Ngyuen, M. Nagai, M. Ichimiya, M. Ashida and H. Tanaka, C-8: Investigation of nanodomain properties in the phase-separated manganite by probing electron dynamics, 2016/5/30. 6月6日-6月10日: CLEO 2016 (San Jose Convention Center, San Jose, USA) Eiichi Matsubara, Masaya Nagai, Masaaki Ashida, SM4L.6: Enhancement of Intensity of Ultrabroadband Coherent Infrared Pulses Generated from Air Plasma by Controlling Polarization of Driving Pulses, 2016/6/6. Masaya Nagai,Shingo Aono, Masaaki Ashida, Keigo Kawase, Akinori Irizawa, Goro Isoyama, STh5I.1: THz-induced luminescence in ZnO nanocrystals with strong dependence on the excitation frequency, 2016/6/9. 9月25-30日: The 41th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2016) (Copenhargen, Denmark) E. Matsubara, M. Nagai, M. Ashida, M4B.2:Extension Of The High Frequency Limit Of Time Domain Spectroscopy Up To 200 THz Using Two-color Pumped Air Plasma, 2016/9/26. R. Mendis, M. Nagai, Y. Wang, N. Karl, D. Mittleman, T2D.1:THz Artificial Dielectric Lens, 2016/9/27. 　 G. Yamashita, E. Matsubara, M. Nagai, C. Kim, H. Akiyama, Y. Kanemitsu, M. Ashida, T5P.05.21:Quantitative Evaluation Of Photocarriers In Semiconductor P-i-n Structures With Time-resolved Terahertz Reflection Spectroscopy, 2016/9/27. 　 M. Nagai, S. Aono, M. Ashida, K. Kawase, A. Irizawa, G. Isoyama, W5P.14.05: Anomalous Luminescence Of ZnO Nanoparticles Irradiated By The Nonresonant Intense THz Pulses, 2016/9/28. 　 　　 T. Morimoto, G. Yamashita, M. Nagai, M. Ashida, Y. Kanemitsu, M. Ashida, h5B.1:A Smart Method For Magneto-optical Spectroscopy With A Quarter-wave Plate, 2016/9/29. 　 M. Nagai, E. Matsubara, M. Ashida, M. Fuyuki, K. Kawase, A. Irizawa, G. Isoyama, J. Aoki, M. Toyoda, h5E.1: Desorption Via Large-amplitude Intermolecular Vibration Driven By The Intense Picosecond THz Pulses, 2016/9/29. 　 10月2-7日：International Workshop on Nitride Semiconductors (IWN2016) (Lake Buena Vista,Orlando, USA) T. Inaba, T. Kojima, G. Yamashita, M. Ashida, and Y. Fujiwara, Quantitative analysis on energy transfer process for Eu luminescent centers in Eu-doped GaN, 2016/10. 10月10-14日：EMN meeting on ultrafast 2016 (Melbourne, Australia) invited Masaaki Ashida, Coherent Generation and Detection of Ultrafast Infrared Pulse Covering from Terahertz to Near-infrared Frequencies, 2016/10/13. 　 10月30日-11月2日 : Optics & Photonics Japan (OPJ 2016)(Tokyo,Japan) T. Oguni，Y. Minowa, M. Ashida, Optical Fabrication of Single-Crystalline Microspheres with High Sphericity, 2016/10/31. 10月31日-11月4日 : 5th Russia-Japan-USA-Europe Symposium on Fundamental & Applied Problems of Terahertz Devices & Technologies(RJUSE TeraTech) (Sendai, Japan) K.Miyagawa, G.Yamashita, M.Nagai, C.Kim, H.Akiyama, Y.Kanemitsu, M.Ashida, Enhancement of the THz Wave Generation from the Surface of Photoexcited GaAs, 2016/11/1-2. 　 2015 4月6-10日: MRS Spring meeting & Exhibit (San Francisco, California, USA) M. Ichimiya, T. Umakoshi, S. Saeki, H. Ishihara and M. Ashida, WW4.10: Ultrafast Optical Response Due to Coherent Coupling between Light and Exciton in Semiconductor Thin Films, 2015/4/8. 4月22-24日: Korea-Japan Joint Symposium on Semiconductor Physics and Technology -Ultrafast Nanophotonics, Korean Physical Scociety Spring Meeting 2015 (Daejeon, South Korea) invited M. Nagai, THz spectroscopy in photoexcited semiconductors, 2015/4/23. 4月22-24日: Optical manipulation and its satellite topics (OMC'15) (Yokohama) Y. Minowa, R. Kawai and M. Ashida, OMC5-2: Optical trapping of a microdroplet containing a nanomaterial, 2015/4/23. S. Okamoto, Y. Minowa and M. Ashida, OMC6-3: Lasing of single-crystalline microspheres with high sphericity fabricated by laser ablation, 2015/4/24. 5月10-15日: CLEO 2015 (San Jose, USA) E. Matsubara, T. Morimoto, M. Nagai and M. Ashida, SM3H.1: Extended-Drude Response of Photocarriers in InSb Revealed with Ultrabroadband Infrared Time-Domain Spectroscopy, 2015/5/11. R. Mendis, M. Nagai, Y. Wang, N. Karl and D. Mittleman, STu1H.3: THz Artificial Dielectric Lens, 2015/5/12. 5月18-22日: 11th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials (EXCON 2015) (Montreal, Canada) M. Ichimiya, T. Umakoshi, S. Saeki, T. Kinoshida, H. Ishihara and M. Ashida, Quasi01-We02: Enhancement of Nonlinear Signal of Multinode-type Excitons Using Ultrashort-pulse Excitation in CuCl Thin Films, 2015/5/20. 6月21-25日: CLEO/Europe-EQEC 2015 (Munich, German) E. Matsubara, T. Morimoto, M. Nagai and M. Ashida, CC-P.15: Visualization of Extended-Drude Response of Photoexcited Carriers in InSb by Ultrabroadband Infrared Time-Domain Spectroscopy, 2015/6/21. S. Okamoto, S. Ichikawa, Y. Minowa and M. Ashida, CE-11.5: Lasing Properties of Semiconductor Microspheres with High Sphericity Fabricated by Laser Ablation in Superfluid Helium, 2015/6/24. 6月30日-7月4日: The 3rd International Symposium on Microwave/Terahertz Science and Applications (MTSA 2015) and The 6th International Symposium on Terahertz Nanoscience (TeraNano 6) (Okinawa Institute of Science and Technology (OIST) ) Invited M. Ashida, M. Nagai and E. Matsubara, B2-13: Ultrabroadband Terahertz Spectroscopy of Semiconductors, 2015/7/2. T. Morimoto, G. Yamashita, M. Nagai and M. Ashida, P2-13: Direct evaluation of reflection coefficients of circularly polarized light from THz time-domain spectroscopy, 2015/7/2. 8月9-12日: SPIE Optics + Photonics 2015, Optical Trapping and Optical Micromanipulation XII (San Diego, USA) Invited Y. Minowa, R. Kawai, M. Ashida, 9548-17: Optical trapping of microdroplet containing a single nanomaterial in helium gas, 2015/8/9. 8月30-9月2日: The Second International Symposium on Frontiers in THz Technology (FTT2015) (Hamamatsu, Shizuoka) Invited M. Nagai, MoP2.1: THz time-domain spectroscopy using an achromatic wave plate based on the stacked parallel metal plate, 2015/8/31. T. Morimoto, G. Yamashita, M. Nagai and M. Ashida, Pos2.04: Direct measurement of Fresnel coefficients for circular polarization in THz frequency region, 2015/9/1. M. Nagai, Y. Takahashi, N. Mukai, Y. Minowa, M. Ashida, J. Takayanagi and H. Ohtake, Pos2.25: Wave plate composed of stacked parallel metal plates in THz frequency region, 2015/9/1. 12月1-4日: The 4th International Workshop on Microcavities and Their Applications (WOMA2015) (Hokkaido, Japan) Invited M. Ashida, Single-crystalline microspheres with high sphericity fabricated by laser ablation in superfluid helium, 2015/12/3. 2014 4月13-16日: Focus on Microscopy 2014 (FOM2014) (Sydney, Australia) S. Fukushima, T. Furukawa, H. Niioka, M. Ichimiya, J. Miyake, M. Ashida, T. Araki and M. Hashimoto, P1-E/11: Rare-earth doped nanophosphors for multi-colored cathodoluminescence and up-conversion luminescence bioimaging, 2014/4/14. 4月22-25日: 1st OPTICAL MANIPULATION CONFERENCE (OMC '14) (Yokohama, Japan) Y. Minowa, H. Tahara and M. Ashida, OMC1-2: Optical manipulation of quantum dots in superfluid He, 2014/4/23. S. Okamoto, Y. Minowa and M. Ashida, OMC7-4: Optical fabrication of single-crystalline microspheres with high sphericity, 2014/4/24. 6月7-15日: CLEO 2014 (San Jose, USA) I. Katayama, M. Bito, E. Matsubara and M. Ashida, JTu4A.86: Broadband Terahertz Generation Approaching Optical Communication Frequency Using Tilted DAST Crystals, 2014/6/10. T. Mochizuki, E. Matsubara, M. Nagai, T. Itoh and M. Ashida, JW2A.113: Photoinduced Absorption with Ultrafast Decay Constants in a Large Single Crystal of BiFeO3, 2014/6/11. E.Matsubara, M. Nagai and M. Ashida, JTh5A.44: Ultrabroadband Coherent Infrared Spectroscopy Using Air-Plasma Based Generation and Detection, 2014/6/12. M. Ichimiya, H. Murata, T. Umakoshi, T. Kinoshita, H. Ishihara and M. Ashida, JTh5A.109: Ultrafast Resonant Optical Kerr Response due to Long-Range Coherent Coupling of Light and Multinode-Type Excitons, 2014/6/12. 7月7-11日: 19th International Conference on Ultrafast Phenomena (UP 2014) (Okinawa, Japan) M. Ichimiya, T. Umakoshi, H. Murata, T. Kinoshita, H. Ishihara and M. Ashida, 08.Tue.P2.47: Resonant Optical Kerr Response with Ultrashort Decay Time by Nonlocal Wave Coupling of Light and Excitons, 2014/7/9. ※A schedule was postponed by 1 day because of a typhoon. 9月14-19日: The 39th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2014) (Tucson, Arizona) M. Nagai, E. Matsubara, M. Ashida, J. Takayanagi and H. Ohtake, T3/C-13: THz Time-domain Spectroscopy Beyond 4 THz Using A Sub-picosecond Yb-doped Fiber Laser System, 2014/9/16. N. Mukai, M. Nagai, Y. Minowa, M. Ashida, J. Takayanagi and H. Ohtake, T4/D-19: Achromatic THz Wave Plate Composed Of Stacked Parallel Metal Plates with A Pillar Array, 2014/9/16. M. Nagai, E. Matsubara, M. Ashida, K. Kawase, A. Irizawa, R. Kato and G. Isoyama, T4/E-16: Ablation Of Organic Crystals Using Picosecond THz Free Electron Laser Pulses, 2014/9/16. G. Yamashita, E. Matsubara, M. Nagai, Y. Kanemitsu and M. Ashida, M3/E-12: Carrier Multiplication In Bulk Silicon Investigated By Terahertz Spectroscopy, 2014/9/15. I. Katayama, Y. Chiba, I. Morohashi, Y. Irimajiri, N. Sekine, I. Hosako and M. Ashida, R5-P31: Sub-terahertz Frequency Detection Using Sub-5 Fs Laser Pulses And A Photoconductive Antenna, 2014/9/18. 11月30日-12月5日: 2014 MRS Fall Meeting and Exhibit (Boston, Massachusetts) M. Ashida, S. Okamoto, S. Ichikawa and Y. Minowa, T8.02: Fabrication and Lasing Properties of Single-Crystalline Semiconductor Microspheres with Anisotropic Crystal Structures, 2014/12/3. T. V. A. Nguyen, A. N. Hattori, M. Nagai, T. Nakamura, K. Fujiwara, M. Ashida and H. Tanaka, N9.08: Estimation of DC Transport Dynamics in Strongly Correlated (La,Pr,Ca)MnO3 Film Using an Insulator-Metal Composite Model for THz Conductivity, 2014/12/3. 12月1-5日: TeraNano V: Fifth International Symposium on Terahertz Nanoscience (Martinique) Invited M. Nagai, THz spectroscopy using a few-cycle circularly polarized THz pulses, 2014/12/1. 2月8日: SPIE Photonic West (Munich, Germany) Invited M. Nagai, Pulse shaping of the intense few-cycle terahertz pulses for nonlinear spectroscopy, 2015/2/8. 3月8日-13日: The sixth international workshop on Optical Terahertz Science and Technology (OTST 2015) (San Diego, CA) M. Nagai, E. Matsubara, M. Ashida, K. Kawase, A. Irizawa, R. Kato and G. Isoyama, P1-34: Non-thermal burst of organic powder using picosecond THz free electron laser pulses, 2015/3/9. E. Matsubara, T. Morimoto, M. Nagai and M. Ashida, P3-3: Non-Drude response of dense photoinduced carriers in InSb revealed by ultrabroadband infrared time-resolved spectroscopy, 2015/3/11. 2013 4月1-5日: International Workshop on Terahertz Science and Technology 2013 (OTST 2013) (Kyoto, Japan) Y. Sakasegawa, S. Saito, N. Sekine, M. Ashida and I. Hosako, Tu4-31: Near-infrared femtosecond-pulse injection in terahertz quantum cascade lasers, 2013/4/2. Invited E. Matsubara, M. Nagai and M. Ashida, W2A-1: Ultrabroadband coherent infrared pulse with a spectral range up to 200 THz using air for both generation and detection, 2013/4/3. M. Nagai, Y. Minowa and M. Ashida, W3C-2: Modulation of the carrier envelop phase for monocycle THz pulses using parallel metal plates, 2013/4/3. G. Yamashita, M. Yoshii, E. Matsubara, M. Nagai, Y. Kanemitsu and M. Ashida, W4-26: Assessment of the generation efficiency of photoexcited carriers in Si film using optical pump-THz probe spectroscopy, 2013/4/3. K. Mavani, D. Singh Rana, M. Nagai, M. Tonouchi and K. Tanaka, Th3-22: Ultrafast Photo-induced Effect and Corresponding Magnetization of Pr 0.5 Sr 0.5 MnO3, Thin Film as Investigated by Visible Pump Terahertz Probe Spectroscopy, 2013/4/4. 5月12-16日: CLEO/Europe-IQEC 2013 (Munich, Germany) E. Matsubara, M. Nagai and M. Ashida, CC-1.4 SUN: Ultrabroadband Infrared Pulse Ranging from Terahertz Region to Near Infrared Using Air for both Generation and Detection, 2013/5/12. M. Nagai, E. Matsubara, Y. Minowa and M. Ashida, CC-P.10 SUN: Carrier envelope phase control of monocycle THz pulses using an articial dispersive medium, 2013/5/12. 6月9-14日: CLEO2013 (San Jose, USA) I. Katayama, M. Bito, E. Matsubara and M. Ashida, CM3J.8: Near-Infrared Time-Domain Spectroscopy using Broadband Phase-locked Electromagnetic Pulses, 2013/6/10. Y. Sakasegawa, S. Saito, N. Sekine, M. Ashida and I. Hosako, JTh5A.32: Near-Infrared Laser Pulse Induced Amplitude Modulation of Terahertz Quantum Cascade Lasers, 2013/6/13. 6月30-7月4日: CLEO-PR&OECC/PS 2013 (kyoto, Japan) E. Matsubara, M. Nagai and M. Ashida, MC1-7: Generation and Detection of Ultrabroadb and Coherent Infrared Pulses with Frequencies up to 200 THz Using Air Plasma and 10 fs Pulses, 2013/7/1. M. Nagai, Y. Kamon, Y. Minowa, E. Matsubara and M. Ashida, MC2-3: Coherent Transitions in Doped-Germanium Using Intense Few-Cycle THz Pulses, 2013/7/1. R. Kakimi, M. Fujita, M. Nagai, M. Ashida and T. Nagatsuma, WC4-3: Terahertz-Wave Absorbers Using a Photonic Crystal Slab, 2013/7/3. M. Ichimiya, K. Kamizono, N. Okamoto, H. Ishihara and M. Ashida, WPB-28: Optical Kerr Effect of Confi ned Excitons Coherently Coupled with Radiation Wave, 2013/7/3. 8月25-29日: SPIE Optics + Photonics 2013, Optical Trapping and Optical Micromanipulation X (San Diego, USA) Y. Minowa, Y. Nawaki, S. Okamoto and M. Ashida, 8810-9: Optical fabrication and manipulation of semiconductor nanoparticles in superfluid helium, 2013/8/25. 9月1-6日: The 38th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2013) (Mainz, Germany) E. Matsubara, M. Nagai and M. Ashida, We8-3: Coherent Detection Of Ultrabroadband Coherent Infrared Pulses Up To 150 THz Using Air, 2013/9/4. M. Nagai, N. Mukai, Y. Minowa and M. Ashida, Th5-1: Achromatic THz Wave Plate Based On The Structured Parallel Metal Plates, 2013/9/5. M. Nagai, E. Matsubara and M. Ashida, Th41-3: Phase-Sensitive THz Nonlinear Spectroscopy In High-TC Superconductor Thin Film, 2013/9/5. G. Yamashita, E. Matsubara, M. Nagai, Y. Kanemitsu and M. Ashida, Th P3-43: Quantitative Evaluation Of The Photoexcited Carriers In Bulk Si Using Optical Pump-THz Probe Spectroscopy, 2013/9/5. 10月14-16日: The 21st International Conference on Applied Electromagnetics and Communications (ICECom 2013)（Dubrovnik, Croatia） Invited Y. Sakasegawa, N. Sekine, S. Saito, M. Ashida and I. Hosako, Influence of ultra-short- infrared optical pulse injection into terahertz laser, 2013/10/16. 12月1-6日: 2013 MRS Fall Meeting & Exhibit (Boston, Massachusetts) S. Okamoto, S. Ichikawa, Y. Minowa and M. Ashida, T1.03: Optical Fabrication of Semiconductor Single-Crystalline Microspheres in Superfluid Helium, 2013/12/2. 12月2日: Super Imaging 2013 (Hamamatsu, Japan) S. Fukushima, T. Furukawa, H. Niioka, M. Ichimiya, J. Miyake, M. Ashida, T. Araki and M. Hashimoto, Cathodoluminescence and up-conversion fluorescence bioimaging with rare-earth doped nanophosphors, 2013/12/2. 12月15-18日: International Conference on Small Science 2013 （Las Vegas, USA） Invited H. Niioka, T. Furukawa, S. Fukushima, M. Ichimiya, J. Miyake, M. Ashida, T. Araki and M. Hashimoto, Rare-earth doped Y2O3 nanophosphors for biological cathodoluminescence imaging, 2013/12. 2月1-6日: SPIE Photonics West 2014（San Francisco） Invited M. Ashida, E. Matsubara and I. Katayama, 8964-7: Ultra-broadband IR and THz generation and detection with ultrashort pulses, 2014/2/4. 2月3-4日: 1st. Kansai Nanoscience and Nanotechnology International Symposium T. V. A. Nguyen, A. N. Hattori, M. Nagai, T. Nakamura, K. Fujiwara, M. Ashida and H. Tanaka, Poster Presentations P34: Investigation of effective carrier characteristics in strongly correlated (La,Pr,Ca)MnO3 films by the THz Time Domain Spectroscopy, 2014/2/3. T. Adachi, T. Kobayashi, S. Miyasaka, S. Tajima, M. Ashida and M. Ichimiya, Poster Presentations P46: The Control of Superconductivity by K and P Doping in SrFe2As2, 2014/2/3. S. Fukushima, T. Furukawa, H. Niioka, M. Ichimiya, J. Miyake, M. Ashida, T. Araki and M. Hashimoto, Poster Presentations P59: Y2O3-based nanophosphors for multi-colored cathodoluminescence and up-conversion luminescence bioimaging, 2014/2/3. 2月25-26日: Japan Taiwan Bilateral Conference on Biomedical and Plasmonic Imaging (Taipei, Taiwan) S. Fukushima, T. Furukawa, H. Niioka, M. Ichimiya, J. Miyake, M. Ashida, T. Araki and M. Hashimoto, Visible to near-infrared luminescent nanoparticles for multimodal bioimaging on nanometer to millimeter scale, 2014/2/26. 3月14日: UK-Japan workshop on Nanophotonics, Metamaterials and Plasmonics (Osaka, Japan) S. Fukushima, T. Furukawa, H. Niioka, M. Ichimiya, J. Miyake, M. Ashida, T. Araki and M. Hashimoto, P30: Synthesis of nanophosphors for correlative cathodoluminescence, up-conversion, and near-infrared bioimaging, 2014/3/14. 　　　　　　　 2012 4月1日-4日: Focus on Microscopy 2012 (FOM2012) (Singapore) H. Niioka, T. Furukawa, M. Ichimiya, M. Ashida, T. Araki and M. Hashimoto, TU-AF2-PAR-C05: Multicolor cathodoluminescence imaging for biological cells with using nanophosphors, 2012/4/3. T. Furukawa, H. Niioka, M. Ichimiya, T. Nagata, M. Ashida, T. Araki and M. Hashimoto, P2-D06: Well-dispersed nanophosphors for cathodoluminescence microscopy produced by using laser ablation method, 2012/4/3. 5月6-11日: CLEO2012 (San Jose, CA USA) E. Matsubara, M. Nagai and M. Ashida, CM2L.3: Generation of ultrabroadband coherent infrated wave with 200 THz bandwidth using air plasma driven by intense sub 10 fs pulses, 2012/5/7. M. Nagai, E. Matsubara and M. Ashida, JW2A.54: High-efficient THz electric pulse generation via optical rectification by suppressing stimulated Raman scattering, 2012/5/9. 6月3-7日: Fifth International Conference on Optical, Optoelectronic and Photonic Materials and Applications (ICOOPMA2012) (Nara) M. Ando, S. Uozumi, I. Katayama, M. Ichimiya, M. Ashida and J. Takeda, 1P-19: Photoluminescence Dynamics in CuCl Thin Films under High-Dense One- and Two-Photon Excitations, 2012/6/4. 7月2-6日: The 10th International Conference on Excitonic Processes in Condensed Matter, Nanostructured and Molecular Materials (EXCON 2012) (Groningen, The Netherlands) Invited M. Nagai, I13: Material controls with the intense picosencond electric pulses, 2012/7/5. S. Okamoto, Y. Minowa and M. Ashida, P084: Low threshold lasing in a single ZnO microsphere in ultraviolet and the whole visible region, 2012/7/5. K. Kamizono, M. Ichimiya, H. Murata, H. Ishihara and M. Ashida, P046: Enhancement of coupling between light and excitons due to strong light confinement in CuCl thin films, 2012/7/5. 7月8-13日: XVIIIth International Conference on Ultrafast Phenomena (UP2012) (Lausanne, Switzerland) E. Matsubara, M. Nagai and M. Ashida, FRI.1B.7: Generation and detection of ultrabroadband infrared wave exceeding 200 THz, 2012/7/13. 9月23日-28日: The 37th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2012) (Wollongong, Australia) E. Matsubara, M. Nagai and M. Ashida, Mon-A-1-3: Generation and detection of ultrabroadband coherent infrared pulse with 200 THz bandwidth, 2012/9/24. Y. Sakasegawa, S. Saito, N. Sekine, M. Ashida and I. Hosako, Thu-B-5-3: Emission intensity from terahertz quantum cascade lasers under near-infrared optical pulse injection, 2012/9/27. M. Nagai, E. Matsubara and M. Ashida, Thu-Pos-5: High-efficiency terahertz pulse generation via optical rectification by suppressing stimulated Raman scattering process, 2012/9/27. M. Nagai, M. Kimura, Y. Minowa and M. Ashida, Thu-Pos-25: Phase compensation in THz frequency region using the mirror with metal disk array, 2012/9/27. 9月23日-28日: The 17th International Conference on Molecular Beam Epitaxy (MBE2012) (Nara) M. Ichimiya, L. Q. Phuong, M. Ashida and T. Itoh, MoP-47: Growth of high-quality CuCl thin films by a technique involving electron-beam irradiation, 2012/9/24. 9月30日-10月3日: The 19th Workshop on Oxide Electronics (WOE19) (Apeldoorn,The Netherlands) A. N. Hattori, M. Ichimiya, M. Ashida and H. Tanaka, Extremely small luminescent ZnO nanobox structure fabricated by three-dimensional nanotemplate pulsed-laser deposition, 2012/10/2. 11月27-29日: International Symposium on Frontiers in THz Technology (FTT2012) (Nara, Japan) M. Nagai, M. Kimura, Y. Minowa and M. Ashida, WeA1.4: THz dispersive mirror with metal disk array, 2012/11/28. E. Matsubara, M. Nagai and M. Ashida, Pos1.7: Ultrabroadband coherent infrared source of 1-200 THz using air plasma driven by 10 fs pulses, 2012/11/28. G. Yamashita, E. Matsubara, M. Nagai, T. Tayagaki, Y. Kanemitsu and M. Ashida, Pos2.12: Multiplication of Photoexcited carriers in Si thin film using optical pump-broadband THz probe spectroscopy, 2012/11/29. 12月10-11日: 8th Handai Nanoscience and Nanotechnology International Symposium (Icho kaikan) R. Hasegawa, R. Wakamatsu, A. Koizumi, H. Ofuchi, M. Ichimiya, D. Lee, Y. Terai, T. Honma, M. Ashida and Y. Fujiwara, P1-5: Luminescence Properties of Eu-doped GaN Grown by Selective-area Organometallic Vapor Phase Epitaxy, 2012/12/10. H. Niioka, T. Furukawa, M. Ichimiya, T. Nagata, M. Ashida, T. Araki and M. Hashimoto, P2-29: Rare-earth Doped Y2O3 Nanophosphors Synthesized for Bio-imaging with Using CL and Fluorescence Microscopy, 2012/12/11. L. Q. Phuong, M. Ichimiya, H. Ishihara and M. Ashida, P2-52: Coherent Exciton-light Couplings in High-quality CuCl Thin Films, 2012/12/11. K. Kamizono, M. Ichimiya, H. Murata, H. Ishihara and M. Ashida, P2-53: Enhancement of Exciton Superradiance in CuCl Thin Films under Oblique Incidence, 2012/12/11. 12月11日: Regional Annual Fundamental Science Symposium 2012 (RAFSS 2012), (Persada Johor International Convention Centre, Johor Bahru, Malaysia) Invited M. Ashida, Optical Fabrication and Manipulation of Nanoparticles, 2012/12/11. 3月24-27日: Focus on Microscopy 2013 (FOM2013) (Maastricht, The Netherlands) T. Furukawa, H. Niioka, M. Ichimiya, S. Ichikawa, T. Nagata, J. Miyake, M. Ashida, T. Araki and M. Hashimoto, P1-E/15: Synthesis of Rare-earth doped nano phosphors for biological cathodoluminescence imaging, 2013/3/25. S. Fukushima, T. Furukawa, H. Niioka, M. Ichimiya, T. Nagata, J. Miyake, M. Ashida, M. Hashimoto and T. Araki, P2-C/07: Synthesis of rare-earth doped up-conversion and cathodoluminescence nanophosphors for correlative bioimaging, 2013/3/26. 2011 5月1-6日: Conference on Lasers and Electro-Optics 2011(CLEO: 2011)(Baｌtimore,USA) K. Miyajima, Y, Kagotani, K. Maeno, T. Sumino, S. Saito and M. Ashida, QMh5: Transition from Amplified Spontaneous Emission to Superfluorescence from Biexcitons in Semiconductor Quantum Dots, 2011/5/2. E. Matsubara, Y. Onishi, T. Ishikura and M. Ashida, JThB110: Magnetically controlled broadband THz absorption in a multiferroic hexaferrite at room temperature, 2011/5/5. 5月22-26日: European Conference on Lasers and Electro-Optics and the XIIth European Quantum Electronics Conference 2011(International Congress Center, Munich, Germany) E. Matsubara, Y. Onishi, T. Ishikura, T. Kimura and M. Ashida, CC3.2: Magnetic-Field Induced Broadband THz Absorption Change in a Multiferroic Hexaferrite at Room Temperature, 2011/5/22. 6月26-7月1日: 16th International Conference on Luminescence(ICL'11)(University of Michigan,Michigan,USA) M. Ichimiya, H. Yasuda, M. Ashida, K. Mochizuki, H. Ishihara and T. Itoh, TuN2: Ultrafast Photoresponse Overcoming Room Temperature Dephasing by Coherent Coupling of Light and Confined Excitons, 2011/6/28. L. Q. Phuong, K. Miyajima, K. Maeno, T. Itoh and M. Ashida, TuN3: Transitions From Spontaneous Emission To Stimulated Emission And Superfluorescence Of Biexcitons Confined In CuCl Quantum Dots, 2011/6/28. 8月21-26日: 24th International Conference on Amorphous and Nanocrystalline Semiconductors (ICANS 24) (Nara Prefectural New Public Hall ) M. Ichimiya, H. Yasuda, K. Mochizuki, M. Ashida, H. Ishihara and T. Itoh, 2C4-1: Room Temperature Superradiance due to Coherent Coupling between Light and Extended Single Quantum State, 2011/8/23. L. Q. Phuong, K. Miyajima, K. Maeno, T. Itoh and M. Ashida, 2C4-2: Possible transitions of biexciton luminescence confined in Quantum Dots, 2011/8/23. 10月2-7日: The International Conference on Infrared, Millimeter, andTerahertz Waves (IRMMW-THz 2011)(Houston, USA) S. Saito, N. Sekine, M. Ashida and I. Hosako, W3C.4: The Intensity Modulation of THz-quantum Cascade Lasers by Optical Pulse, 2011/10/5. E. Matsubara and M. Ashida, W5.25: Ultrabroadband Coherent Electric Field Generation from Far Infrared to 200 THz Using Air Plasma Induced by sub 10 fs pulses, 2011/10/5. 10月24-27日: 24th International Microprocesses and Nanotechnology Conference(MNC 2011) (ANA Hotel Kyoto, Kyoto, Japan) M. Ichimiya, H. Yasuda, M. Ashida, K. Mochizuki, H. Ishihara and T. Itoh, 27B-9-4: Ultrafast and Efficient Photoresponse up to Room Temperature by Coherent coupling between Excitons and Radiation Wave, 2011/10/27. 11月10-11日: 7th Handai Nanoscience and Nanotechnology International Symposium (大阪大学　銀杏会館) H. Niioka, T. Furukawa, M. Ichimiya, M. Ashida, T. Araki and M. Hashimoto, PI-38: Multi-color Cathodoluminescence Imaging for Biological Cells With Using Nanophosphors, 2011/11/10. 11月24-29日: International Symposium on Terahertz Nanosclence and Workshop of International terahertz Research Network (大阪大学中之島センター) Invited M. Nagai, 25I-T-11: Large-Amplitude Vibrational Motion Driven by Intense Picosencond Electric Pulse, 2011/11/25. E. Matsubara, M. Nagai and M. Ashida, 28P-34: Ultrabroadband Coherent Light Source Covering from Terahertz to Near Infrared using Air Plasma Induced by an Intense Extremely Short Pulse, 2011/11/28. November 30- December 2: Microwave Workshops & Exhibition（MWE 2011）（Pacifico Yokohama） Invited M. Ashida, Recent Progress in Generation and Detection of Terahertz Waves, 2011/12/1. November 30- December 2: 2011 Annual Meeting of Spectroscopical Society of Japan (RIKEN Yokohama Institute) H. Niioka, T. Furukawa, M. Ichimiya, M. Ashida, T. Araki and M. Hashimoto, Super-resolution imaging of nano phosphors via cathodoluminescence microscopy for biological imaging, 2011/12/1. December 9-10： The 22nd Symposium of Association for Condensed Matter Photophysics (Kumamoto University) M. Yoshii, E. Matsubara, M. Nagai, M. Ashida and M. Tsubouchi, I A-11: Photo-excited carrier dynamics revealed with terahertz pump-probe spectroscopy for opposite travelling direction of excitation pulse and terahertz pulse, 2011/12/9. S. Saito, N. Sekine, M. Ahida and I. Hosako, I A-12: Behavior of THz-Quantum Cascade Lasers to injected optical pulses, 2011/12/9. T. Iwasa, E. Matsubara, M. Nagai and M. Ashida, I A-13: Ultrabroadband infrared wave radiation from air plasma induced by extremely short pulses, 2011/12/9. III A-77: Time resolved micro-spectroscopy and cathodoluminescence measurement of single ZnO microsphere"(12/10) S. Okamoto, Y. Minowa and M. Ashida 2011/12/9. Y. Mukai, M. Nagai, H. Hirori, T. Tanaka and K. Tanaka, III B-96: Non-linear Terahertz Spectroscopy of Accepters in p-Ge, 2011/12/10. Y. Adachi, M. Nagai, K. Tanaka, III B-98: Trying to observe Ladder Climbing in single sucrose crystal by chirped intense terahertz pulse, 2011/12/10. December 14-15: IEICE Technical Committee(Tohoku University) E. Matsubara, M. Nagai and M. Ashida, Generation of ultrabroadband infrared wave ranging up to 200 THz by an intense sub 10 fs pulse, 2011/12/15. December 19-20: 4th Japan-Korea Joint Workshop（Nagoya University) M. Nagai, Large-Amplitude Vibrational Motion Driven by Intense picosecond electric pulse, 2011/12/20. January 21-26： Photonics West 2012(Moscone Center, San Francisco, California, USA) Invited S. Okamoto, Y. Minowa and M. Ashida, 8263-18: Whie-light lasing in ZnO microspheres fabricated by laser ablation, 2012/1/22. March45-18: The 59th Spring Meeting of Japan Society of Applied Physics (Waseda University, Tokyo, Japan) T. Furukawa, H. Niioka, M. Ichimiya, T. Nagata, M. Ashida, T. Araki and M. Hashimoto, 16p-B9-5: Cathodoluminescence Microscopy for Biological Cells with using High Luminescent Rare Earth Doped Nano Phosphors, 2012/3/16. S. Okamoto, Y. Minowa and M. Ashida, 17a-B9-8: Low threshold lasing in semiconductor microspheres, 2012/3/17. E. Matsubara, M. Nagai and M. Ashida, 18a-E8-7: Electric field measurement of ultrabroadband coherent infrared wave from air plasma, 2012/3/18. M. Nagai, E. Matsubara and M. Ashida, 18a-E8-12: High-efficient THz pulse generation with sub-ps excitation pulse and LiNbO3 crystal, 2012/3/18 A. Hattori, M. Ichimiya, M. Ashida and H. Tanaka, 18p-F6-5: Brilliant luminescence of single ZnO nanobox structure fabricated by the 3D nanotemplate pulsed-laser deposition techniques, 2012/3/18. March 24-27: The 67th Physical Society of Japan 2012 Annual Meeting (Kwansei Gakuin University, Nishinomiya, Japan) N. Suzuki, K. Yamamoto, Y. Toukawa, K. Enomoto, H. Matsushima, M. Kumakura, M. Ashida and Y. Moriwaki, 24aBE-2: Trapping fine particles of the superconductivity state, 2012/3/24 K. Ikeda, T. Matsuda, A. Ishikawa, H. Ishihara, M. Ashida and K. Miyajima, 24pPSA-34: Generation Process of Superfluorensce from Biexcitons in Assembly of CuCl Quantum Dots, 2012/3/24. S. Bando, S. Okamoto, Y. Nawaki, Y. Minowa and M. Ashida, 24pPSA-40: Optical manipulation of metal particles, 2012/3/24. K. Kamizono, M. Ichimiya, H. Murata and M. Ashida, 24pPSA-58: Change of DFWM due to strong light confinement in CuCl thin films, 2012/3/24. M. Yoshii, E. Matsubara, M. Nagai, M. Ashida and M. Tsubouchi, 26pBL-9: Photo-excited carrier dynamics revealed with terahertz pump-probe spectroscopy for opposite travelling direction of excitation pulse and terahertz pulse, 2012/3/26. M. Nagai, E. Matsubara and M. Ashida, 27aBL-4: Efficient THz pulse generation in dielectrics with suppressing SRS, 2012/3/27. 2010 May 13-15: The 8th Annual Meeting of Society of Nano Science and Technology (Okazaki Conference Center) D. Ueda, K. Miyajima,M. Ashida and T. Itoh, S3-7: Exciton lifetime in CuCl nanoparticles under external magnetic field, 2010/5/13. Young Best Presentation Award M. Ichimiya, K. Mochizuki, M. Ashida, H. Yasuda, H. Ishihara and T. Itoh, S3-9: Superradiance of a Exciton in Nano-to-Bulk Crossover Regime, 2010/5/13. T. Sumino, K. Miyajima, S. Saito, M. Ashida and T. Itoh, P2-07: Amplified spontaneous emission of biexciton luminescence from CuCl nanoparticles, 2010/5/14. K. Miyajima, S. Saito, M. Ashida and T. Itoh, P2-08: Superfluorescence from CuCl Nanoparticles under Resonant Two-Photon Excitation of Biexcitons, 2010/5/14. May 16-21: Conference on Lasers and Electro-Optics 2010(San Jose, California,USA) I. Katayama, H. Shimosato, M. Bito, K. Furusawa, M. Adachi, M. Shimada, H. Zen, S. Kimura, N. Yamamoto, M. Hosaka, M. Katoh and M. Ashida, CMF6: THz Field Detection of the Coherent Synchrotron Radiation Produced by Laser Bunch Slicing, 2010/5/17. I. Katayama, H. Aoki, J. Takeda, H.Shimosato, M. Ashida, R. Kinjo, I. Kawayama, M. Tonouchi, M. Nagai and K. Tanaka, CTuBB1: Nonlinear THz Spectroscopy on the Dielectric Thin Films, 2010/5/18. M. Ichimiya, K. Mochizuki, M. Ashida, H. Yasuda, H. Ishihara, T. Itoh, QWG1: Confined Excitons with Ultrafast Radiative Decay Time Less than 100 fs Enabling Survival at Room Temperature, 2010/5/19. May 30- June 3: The International Conference on NANOPHOTONICS 2010（Tsukuba International Congress Center ） K. Miyajima, S. Saito, M. Ashida and T. Itoh, P-B10: Superfluorescence from an Ensemble of CuCl Quantum Dots under Two-Photon Excitation of Biexcitons, 2010/6/1. May 30- June 4: International Conference on Core Research and Engineering Science of Advanced Materials（Osaka University Convention Center） D. Ueda, M. Ashida and T. Itoh, PSI7: Exciton lifetime in CuCl quantum dots embedded in NaCl matrix under external magnetic field, 2010/6/1. Best Poster Awards S. Okamoto, Y. Saito, S. Bando, M. Ashida and T. Itoh, PSI8: Lasing in ZnO microspheres, 2010/6/1. T. Sumino, S. Saito, M. Ashida and T. Itoh, PSI9: Amplified spontaneous emission of biexcitons confined in CuCl quantum dots, 2010/6/1. M. Ashida, O-WeII-1: Optical Fabrication and Manipulation of Wide-gap Semiconductor Nanoparticles in Superfluid Helium, 2010/6/2. E. Matsubara, M. Bitoh, H. Shimosato and M. Ashida O-WeII-2: Development of Ultrabroadband Pump Probe Spectroscopy System Ranging from THz to ear Infrared 2010/6/2. June 21-25: 17th International Conference on Dynamical Processes in Excited States of Solids(Argonne, Illinois, USA) M. Ichimiya, K. Mochizuki, M. Ashida, H. Yasuda, H. Ishihara and T. Itoh, BO-3: Efficient radiative recombination of multinode-type excitons up to room temperature in CuCl thin films, 2010/6/21. July 10-16: The 9th International Conference on Excitonic and Photonic Processes in Condensed and nano materials(Brisbane, Australia) S. Okamoto, Y. Saito, S. Bando, M. Ashida and T. Itoh, 3P01: Lasing in ZnO microspheres fabricated by laser ablation in superfluid helium, 2010/7/13. K. Miyajima, S. Saito, M. Ashida and T. Itoh, 13O03: Biexciton superfluorescence from CuCl quantum dots under resonant two-photon excitation, 2010/7/13. pss Young Researcher Award M. Ichimiya, K. Mochizuki, M. Ashida, H. Yasuda, H. Ishihara and T. Itoh, 14O02: Room-temperature degenerate four-wave mixing in CuCl thin films, 2010/7/14. July 18-23: 17th International Conference on Ultrafast Phenomena(UP)(Colorado, USA) M. Ashida, M. Ichimiya, K. Mochizuki, H. Yasuda, H. Ishihara and T. Itoh, ThE43: Coherent Nonlinear Response Surviving at Room Temperature Caused by Ultrafast Radiative Decay of Confined Excitons, 2010/7/22. September 5-10: 35th International Conference on Infrared, Millimeter and Terahertz Waves IRMMW-THz2010（Rome, Italy) Invited I. Katayama, H. Simosato, M. Bito, K. Furusawa, M. Adachi, M. Simada, H. Zen, S. Kimura, N. Yamamoto, M. Hosaka, M. Katoh and M. Ashida, Tu-F1.1: Coherent Synchrotron Terahertz Radiation Using Electron Bunch Slicing, 2010/9/7. Invited E. Matsubara, M. Bito, H. Shimosato and M. Ashida, Fr-C1.1: Ultrabroadband Electric Field Generation and Detection from Far Infrared to Optical Communication Frequency, 2010/9/10. September 14-17: The 71st Fall Meeting of Japan Society of Applied Physics(Nagasaki University) I. Katayama, H. Shimosato, M. Bito, R. Akai, K. Miyamoto, H. Ito and M. Ashida, 16p-F-5: Phase Matching Conditions for the Ultrabroadband Terahertz Generation Using DAST Single Crystals, 2010/9/16. September 23-26: The Physical Society of Japan 2010 autumn meeting(Osaka prefecture University) D. Ueda, K. Miyajima, M. Ashida and T. Itoh, 23pRE-10: Magnetic Field Effect on Decay Time of Triplet Excitons in CuCl Quantum Dots III, 2010/9/23. T. Sumino, K. Miyajima, S. Saito, M. Ashida and T. Itoh, 23pRE-11: Amplified spontaneous emission of biexciton luminescence from CuCl quantum dots, 2010/9/23. K. Miyajima, A. Ishikawa, K. Maeno, S. Saito, M. Ashida, H. Ishihara and T. Itoh, 23pRE-12: Superfluorescent nature of time profiles of biexciton luminescence in the　assembly of CuCl quantum dots III, 2010/9/23. S. Okamoto, Y. Saito, S. Bando, T. Iida, H. Ishihara and M. Ashida, 23pRE-14: Optical manipulation and micro-photoluminescence experiment of ZnO nano-particles, 2010/9/23. K. Furusawa, H. Simosato and M. Ashida, 24pRC-7: Enhancement of spectral bandwidth of asynchronous optical sampling　THz time domain spectroscopy (II)), 2010/9/24. K. Abe, K. Miyajima, F. Yamada, K. Katayama, M. Ashida and T. Itoh, 25pPSB-43: Photoinduced Magnetization of Magnetic Polarons in CdMnTe under High-Density Resonant Excitation, 2010/9/25. L. Q. Phuong，K. Miyajima，M. Ashida and T. Itoh, 25pPSB-58: Intrinsic biexciton lifetime in CuCl QDs under two-photon excitation of biexcitons, 2010/9/25. October 26-29：EOS Annual Meeting 2010(Paris, France) I. Katayama, H. Shimosato, M. Bito, K. Furusawa, M. Adachi, M. Shimada, H. Zen, S. Kimura, N. Yamamoto, M. Hosaka, M. Katoh, M. Ashida, Electric Field Detection of Coherent Synchrotron Terahertz Radiation, 2010/10/29. October 28-30：GCOE Fall School (Okayama Ikoi Village) S. Okamoto, 28P-42: Lasing in ZnO microspheres, 2010/10/28. E. Matsubara, 28P-43: Generation of intense ultrabroadband coherent infrared wave using gas and extremely short optical pulses, 2010/10/28. Le Quang Phuong, 29P-41: Spontaneous and stimulated emissions from biexcitons in CuCl quantum dots, 2010/10/29. Nguyen Hoai Anh, 29P-42: Morphology and Photoluminescence studies of Porous amorphous Silicon Carbide thin films, 2010/10/29. December 10-11: The 21st Symposium of Association for Condensed Matter Photophysics (Osaka City University) K. Furusawa, E. Matsubara and M. Ashida, I A-4: Enhancement of spectral bandwidth in asynchronous optical sampling, 2010/12/10. N.H. Anh, K. Miyajima, T. Itoh, D.T. Cao, C. Tuan-Anh, L.T. Quynh-Ngan and M. Ashida, I B-41: Study of Photoluminescence and Morphology for Porous Amorphous Silicon Carbide, 2010/12/10. T. Sumino, K. Miyajima, T. Itoh, S. Saito and M. Ashida, II A-48: Oscillatory structure of biexcitonic superfluorescence in CuCl quantum dots, 2010/12/11. L. Q. Phuong, K. Miyajima, T. Itoh and M. Ashida, II A-49: Spontaneous and stimulated emissions from biexcitons in CuCl quantum dots, 2010/12/11. K. Abe, K. Miyajima and M. Ashida, IIB-73: Static Magnetic Kerr Rotation and Photoluminescence under the Weak and Strong Excitation for Cd1-xMnxTe, 2010/12/11. D. Ueda, K. Miyajima, T. Itoh and M. Ashida, III B-111: Energy Splitting of Singlet-Triplet Exciton in CuCl Quantum Dots, 2010/12/11. December 16-17： The 3rd Korea-Japan Joint Workshop on THz Technology（Busan,Korea） Invited M. Ashida, Ultrabroadband terahertz wave generation and detection with DAST crystal and photoconductive antenna, 2010/12/17. 2月7-11日： International Conference on Spontaneous Coherence in Excitonic Systems (ICSCE-5) （Lausanne,Switzerland） K. Miyajima, K. Maeno, S. Saito, M. Ashida and T. Itoh, Poster33: GENERATION OF SUPERFLUORESCENCE FROM BIEXCITON STATES IN CUCL QUANTUM DOTS UNDER TWO-PHOTON RESONANT EXCITATION, 2011/2/8,10. March43-17： International Workshop on Optical Terahertz Science and Technology, 2011(OTST2011)（Santabarbara,USA） I. Katayama, H. Shimosato, M. Bito, K. Furusawa, M. Adachi, M. Shimada, H. Zen, S. Kimura, N. Yamamoto, M. Hosaka, M. Katoh and M. Ashida, MF51: Terahertz Coherent Synchrotron Radiation Probed with Electro-Optic Sampling Method, 2011/3/14. I. Katayama, M. Bito, R. Akai, H. Shimosato, K. Miyamoto, H. Ito and M. Ashida, WC1: Phase matching condition for ultrabroadband terahertz generation in a DAST Single Crystal, 2011/3/16. March54-27: The 58th Spring Meeting of Japan Society of Applied Physics (Kanagawa Institute of Technology) M. Ashida, 24p-BX-4: Direct detection of optical electric field using photoconductive antenna, 2011/3/24. M. Nagai, 24p-BX-2: Ultrafast spin manupilation with THz radiation, 2011/3/24. M. Nagai, 25p-BX-5: Request of young researchers in optical science, 2011/3/25. March55-28: The 66th Physical Society of Japan 2011 Annual Meeting (Niigata University) L. Q. Phuong，T. Sumino，K. Miyajima，S. Saito and M. Ashida, 25pPSA-48: Gerneration of Superfluorescence from Biexcitons in CuCl Quantum Dots under short pulse excitation, 2011/3/25. 2009 May 9-11: The 7th Annual Meeting of Society of Nano Science and Technology (Tokyo University) K. Miyajima, K. Maeno, M. Ashida and T. Itoh, Amplified Spontaneous Emission and Superfluorescence from Biexcitons in an Ensemble of Semiconductor Nanoparticles, 2009/5/9. Y. Saito, S. Okamoto, K. Inaba, M. Ichimiya, M. Ashida and T. Itoh, Fabrication of ZnO Nanoparticles by Laser Ablation in Superfluid Helium, 2009/5/ . June 14-19: European Conference on Lasers and Electro-Optics and the XIth European Quantum Electronics Conference 2009（Munich, Germany） M. Ashida, M. Bito, H. Shimosato and I. Katayama, Ultra-broadband field-resolved detection using photoconductive antenna from sub-THz to near-infrared, 2009/6/ . September 1-3: The 5th Handai Nanoscience and Nanotechnology International Symposium (Osaka University, Icho Kaikan) T. Doki, K. Miyajima, M. Ashida and T. Itoh, P2-29: Cathodoluminescence of SiC Nanotubes, 2009/9/ . Y. Saito, S. Okamoto, M. Ashida and T. Itoh, P2-30: Fabrication of ZnO Nanoparticles by Laser Ablation in Various Environments, 2009/9/ . 9月7-11日: 11th International Conference on Optics of Excitons in Confined Systems (Madrid) K. Miyajima, K. Maeno, S. Saito, M. Ashida and T. Itoh, AMPLIFIED SPONTANEOUS EMISSION AND SUPERFLUORESCENCE FROM BIEXCITONS IN CUCL QUANTUM DOTS, 2009/9/ . September 9: The 70th Fall Meeting of Japan Society of Applied Physics(Toyama University) H. Shimosato, I. Katayama, S. Saito, M. Ashida, Y. Kadoya and K. Sakai , Broadband and Rapid THz-TDS System Using Photoconductive Antennas, 2009/9/9. September 25-28: The Physical Society of Japan 2009 autumn meeting （Kumamoto University） S. Okamoto, Y. Saito，K. Inaba，M. Ashida and T. Itoh, 25aXB-6: Lasing in ZnO microspheres, 2009/9/25. M. Bitoh，H. Shimosato，I. Katayama andM. Ashida, 27aPS-30: Ultrabroadband electric field detection up to 180 THz by using photoconductive antenna, 2009/9/27. K. Furusawa, H. Shimosato and M. Ashida, 27aPS-103: Enhancement of spectral bandwidth of asyncronous optical sampling THz time domain spectroscopy, 2009/9/27. H. Shimosato, I. Katayama, S. Saito, H. Shimakage, Z. Wang, M. Ashida and K. Sakai, 27pXB-11: Measurement of superconducting MgB2 thin films by broadband THz time domain spectroscopy II, 2009/9/27. I. Katayama, H. Aoki, J. Takeda, M. Nagai, K. Tanaka, H. Shimosato, M. Ashida, T. Kinjo, I. Kawayama and M. Tonouchi, 28aXA-4: Nonlinear THz spectroscopy om Quantum Paraelectric SrTiO3, 2009/9/28. November 24-25: International Workshop on Advanced Materials and Nanotechnology 2009 (IWAMN 2009) (Hanoi University of Science, Vietnam) K. Abe, K. Miyajima, M. Ashida and T. Itoh, Magneto-optical Kerr measurement for the multiferroic material, 2009/11/24. D. Ueda, K. Miyajima, M. Ashida and T. Itoh, Exciton lifetime in CuCl quantum dots embedded in NaCl matrix under external magnetic field, 2009/11/24. November 30-December 3: International Workshop on Terahertz Technology 2009 (TeraTech ’09) （Nakanoshima Center, Osaka University, Osaka） H. Shimosato, M. Ashida, I. Katayama, S. Saito, H. Shimakage, Z. Wang and K. Sakai, Development of broadband and rapid THz-TDS system and its application to measurement of superconducting thin films, 2009/12/1. E. Matsubara, M. Bitoh, H. Shimosato and M. Ashida, Ultrabroadband Electric Field Detection from Microwave to Optical Communication Frequency, 2009/12/2. November 30-December 4: Materials Research Society (MRS) Fall Meeting（Boston, USA） K. Miyajima, S. Saito, M. Ashida and T. Itoh, Superfluorescent pulsed emission from biexcitons in an ensemble of CuCl quantum dots, 2009/12/ . December 11-12: The 20th Symposium of Association for Condensed Matter Photophysics (Osaka City University) III B-96: Superfluorescent pulsed emission from biexciton states in CuCl quantum dots, K. Miyajima, K. Maeno, T. Sumino, S. Saito, M. Ashida and T. Itoh, 2009/12/12. T. Doki, K. Miyajima, T. Itoh, D. T. Cao, C. Tuan-Anh, L. T. Quynh-Ngan and N. T. Thu-Ha, 　II A-55: Luminescence spectra of porous amorphous SiC, 2009/12/12. S.Okamoto, Y.Saito, M. Ashida and T. Itoh, II B-62: Lasing in ZnO microspheres, 2009/12/12. T. Sumino, K. Miyajima, S. Saito, M. Ashida and T. Itoh, III B-97: Anomalous biexciton luminescence in CuCl quantum dots, 2009/12/12. Y. Saito, S. Okamoto, M. Ichimiya, M. Ashida and T. Itoh, II B-72: Optical manipulation of ZnO nanoparticles, 2009/12/12. March 20-23: The 65th Physical Society of Japan 2010 Annual Meeting (Okayama Univerisity) M. Ichimiya, K. Mochizuki, M. Ashida, H. Yasuda, H. Ishihara and T. Itoh, 20aHQ-4: High-temperautre degenerate four-wave mixing in CuCl thin films, 2010/3/19. H. Yasuda, M. Ichimiya, K. Mochizuki, M. Ashida, T. Itoh and H. Ishihara, 20aHQ-5: Theoretical Analysis of Degenerate Four-Wave Mixing (DFWM) of Thin Layers at Room Temperature, 2010/3/19. K. Miyajima. K. Maeno, T. Sumino, S. Saito, M. Ashida and T. Itoh, 20pHK-2: Superfluorescent nature of time profiles of biexciton luminescence in the assembly of CuC qunatum dots II, 2010/3/19. Y. Saito, S. Okamoto, S. Bando, M. Ashida and T. Itoh, 20pHK-3: Optical fabrication and manipulation of ZnO nanoparticles, 2010/3/19. S. Okamoto, Y. Saito, S. Bando, M. Ashida and T. Itoh, 20pHK-4: Lasing in ZnO mairospheres II, 2010/3/19. E. Matsubara, M. Bitoh, H. Shimosato and M. Ashida, 20pHQ-10: Development of ultrabroadband pump probe spectroscopy system ranging from THz to near infrared, 2010/3/19. I. Katayama, H. Shimosato, M. Bito, K. Furusawa, M. Adachi, M. Shimada, H. Zen, S. Kimura, N. Yamamoto, M. Hosaka, M. Katoh and M. Ashida, 20pHQ-11: Teraheltz Field Detection of Coherent Sychrotron Radiation, 2010/3/19. 2008 May 4-9: Conference on Lasers and Electro-Optics 2008 (San Jose, USA) M. Ashida, R. Akai, H. Shimosato, I. Katayama, K. Miyamoto and H. Ito, CTuX6: Ultrabroadband THz Field Detection beyond 170THz with a Photoconductive Antenna, 2008/5/ . May 7-9: The 6th Annual Meeting of Society of Nano Science and Technology (Kyushu University) F. Yamada, K. Miyajima, Y. Umemura, K. Katayama. M. Ashida and T. Itoh, Zeeman splitting of Z3 exciton in CuCl nanoparticles embedded in NaCl, 2008/5/ . May 11-16: The 5th International Conference on Semiconductor Quantum Dots (QD2008)（Gyeongju, Korea） K. Miyajima, Y. Umemura, K. Katayama, M. Ashida and T. Itoh, Triplet states of free and bound excitons confined in CuCl quantum dots, 2008/5/13. T. Itoh, K. Inaba, M. Ichimiya, M. Ashida, T. Iida, H. Ishihara and S. Ichikawa, Laser ablation and manipulation of wide-gap semiconductor quantum dots in superfluid liquid helium, 2008/5/15. June 9-13: XVI International Conference on Ultrafast Phenomena Topical Meeting and Tabletop Exhibit (Stresa, Italy) M. Ashida, R. Akai, H. Shimosato, I. Katayama, K. Miyamoto and H. Ito, TUE2p.5: Electric Field Detection of Near-Infrared Light Using Photoconductive Sampling, 2008/6/10. June 22-27: The 8th International Conference on Excitonic Processes in Condensed Matter (EXCON'08)（Kyoto University, Japan） Invited K. Katayama, K. Miyajima, M. Ashida and H. Ito, B2-4: Polarization memory effect on nonlinear photoluminescence of semimagnetic semiconductor Cd0.8Mn0.2Te, 2008/6/23. M. Ashida, R. Akai, H. Shimosato, I. Katayama, K. Miyamoto and H. Ito, C2-2: Ultrabroadband Time domain spectroscopy using photoconductive Antenna 2008/6/25. K. Miyajima, Y. Umemura, F. Yamada, K. Katayama, M. Ashida and H. Ito, OP-I-09: Magnetic-field induced mixing of singlet and triplet excitons confined in CuCl quantum dots, 2008/6/24. K. Inaba, T. Saito, Y. Saito, M. Ichimiya, M. Ashida, S. Ichikawa, S. Takeda and H. Ito, P-17: Optical fabrication of wide-gap semiconductor nanoparticles in superfluid helium, 2008/6/26. EXCON PRIZE T. Yoshioka, K. Miyajima, M. Ashida and H. Ito, P-48: Infrared transient absorption spectra for excited transition of excitons and biexcitons in CuCl, 2008/6/26. July 7-11: The 15th International Conference on Luminescence and Optical Spectroscopy of Condensed Matter (ICL'08)（Lyon, France） K. Inaba, T. Saito, Y. Saito, M. Ichimiya, M. Ashida and T. Itoh, Cathodoluminescence spectroscopy of ZnO nanoparticles fabricated by laser ablation in superfluid helium, 2008/7/ . K. Katayama, K. Miyajima, M. Ashida and T. Itoh, Enhancement of internal magnetic field arise from high-spin state of dense magnetic polarons in Cd0.8Mn0.2Te, 2008/7/ . K. Miyajima, Y. Kagotani, S. Saito, M. Ashida T. Itoh, Superfluorescence of biexcitons confined in CuCl quantum dots, 2008/7/ . September 15-19: The International Conference on Infrared, Millimeter and Terahertz Waves 2008 (IRMMW-THz) (Pasadena, USA) M. Ashida, R. Akai, H. Shimosato, I. Katayama, K. Miyamoto and H. Ito, Ultrabroadband THz Wave Detection Using Photoconductive Antenna, 2008/9/ . September 20-23: The Physical Society of Japan 2008 autumn meeting (Iwate university) T. Yoshioka, K. Miyajima, M. Ashida and T. Itoh, Confinement effect for excited excitons and biexcitons in CuCl quantum dots, 2008/9/21. September 26-28: The 4th Handai Nanoscience and Nanotechnology International Symposium (Icho kaikan) K. Inaba, T. Saito, Y. Saito, M. Ichimiya, M. Ashida, T. Iida, H. Ishihara and T. Itoh, P1-19: Laser ablation and manipulation of CuCl nanoparticles in superfluid helium, 2008/9/ . K. Maeno, K. Miyajima, M. Ashida and T. Itoh, P1-20: Unique Temporal Behavior of Biexciton Luminescence in CuCl Quantum Dots, 2008/9/ . T. Saito, K. Inaba, Y. Saito, M. Ichimiya, M. Ashida and T. Itoh, P1-21: Fabrication of ZnO Nanoparticles by Laser Ablation in Superfluid Helium, 2008/9/ . M. Matsuda, M. Ichimiya, M. Ashida and T. Itoh, P1-23: Observation of Large Optical Nonlinearity of Excitons in a CuCl Thin Film, 2008/9/ . F. Yamada, K. Miyajima, K. Katayama, M. Ashida and T. Itoh, P1-24: Large Exciton g-factor of CuCl Quantum Dots Embedded in NaCl crystal, 2008/9/ . T. Yoshioka, K. Miyajima, M. Ashida and T. Itoh, P1-25: Infrared Transient Absorption Spectra for Excited State Transition of Excitons and Biexcitons in CuCl, 2008/9/ . September 28- October 3: EOS Topical Meeting on Terahertz Science and Technology - TOM 2(EOS Annual Meeting 2008) Paris, France Ultra-broadband terahertz field-resolved detection using photoconductive antenna, M. Ashida, R. Akai, H. Shimosato, I. Katayama, K. Miyamoto and H. Ito, 2008/9,10/ . October24-25: Teraherz Technology Forum (Mitsubishi Conference Square M+ Marunouchi) Ultrabroadband THz generation and detection with 5-fs pulses, M. Ashida, 2008/10/24. November 15：The 3rd International Conference on Photo-Induced Phase Transitions （Osaka, Japan） Ultra-broadband terahertz time-domain spectroscopy for the study of photo-induced phase, M. Ashida, H. Shimosato, and I. Katayama, 2008/11/15. November 20：Workshop for Quantum-Phase Electronics Center（Hongo Campus, University of Tokyo） Ultrafast Superfluorescence-type Response of Biexciton Luminescence under Two-Photon Resonant Excitation of CuCl Quantum Dots, K. Miyajima, S. Saito, M. Ashida and T. Itoh, 2008/11/20. December 5-6: The 19th Symposium of Association for Condensed Matter Photophysics (Osaka City University) T. Yoshioka, K. Miyajima,L. Q. Phuong, M. Ashida and T. Itoh, Confinement effect on excited excitons and biexcitons in CuCl quantum dots, 2008/12/ . T. Saito, K. Inaba, Y. Saito, M. Ichimiya, M. Ashida and T. Itoh, Fabrication of ZnO nanoparticles by laser ablation in superfluid helium, 2008/12/ . Encouragemant Prize K. Maeno, K. Miyajima, M. Ashida and T. Itoh, Superfluorescent nature of time profile of biexciton luminescence in CuCl quantum dots, 2008/12/ . M. Matsuda, M. Ichimiya, M. Ashida and T. Itoh, Enhancement of Optical Nonlinearity and Radiative Width of Weakly Confined Excitons in CuCL Thin Films, 2008/12/ . L. Q. Phuong. K. Miyajima, M. Ashida and T. Itoh, Biexciton lifetime in CuCl thin film under two-photon resonant excitation for high density regime, 2008/12/ . January 23-24: Nano-kouzou and Bussei Kenkyukai (Kobe University) K. Miyajima, S. Saito, M. Ashida and T. Itoh, Superfluorescent Pulsed Emission from Biexcitons in Semiconductor Nanoparticles, 2009/1/ . March 7-11：International Workshop on Optical Terahertz Science and Technology (OTST) 2009（Santa Barbara,USA) M. Ashida, Ultra-broadband time domain spectroscopy from sub-THz to near- infrared region, 2009/3/ . March 27-30: The 64th Physical Society of Japan 2009 Annual Meeting (Rikkyo Univerity) K. Maeno, K. Miyajima, M. Ashida and T. Itoh, 27aVA-1: Superfluorescent nature of time profiles of biexciton luminescence in the assambly of CuCl quantum dots, 2009/3/27. K. Miyajima, L. Q. Phoung, M. Ashida and T. Itoh, 28pPSA-55: Time-resolved photoluminescence measurement for CuCl under resonant two-photon excitation of biexcitons in high excitation regime, 2009/3/28. T. Hirai, Y. Sawada, Y. Harada, N. Ohno and T. Itoh, 28pPSA-59: Spatially resolved cathodoluminescence spectroscopy of ZnO microparticles, 2009/3/28. T. Kawano, H. Shimosato, M. Ashida, J. Takeda and I. Katayama, 28pPSA-45: Teraheltz Spectroscopy on Diamagnetic-Paramagnetic Phase Transition in TTTA Crystal, 2009/3/28. March 30 - April 2 : Sakigake Forum "Frontier and New Prospects in Optical Science", JSAP Symposium in the 56th Annual Meeting of JSAP Invited M. Ashida, Direct detection of the electric field in optical frequency region using photoconductive antenna, 2009/4/1. 2007 May 6-12: Quantum Electronics and Laser Science Conference（Baltimore, MD, U.S.A） K. Miyajima, Y. Kagotani, K. Sakurai, S. Saito, M. Ashida and T. Itoh, Superfluorescence of Biexcitons in CuCl Quantum Dots under Two-Photon Resonant Excitation, 2007/5/6. K. Miyajima, H. Sawada, M. Ashida and T. Itoh, Transition between Rydberg 1s and 2p Exciton states of Biexcitons in Semiconductor Quantum Dots, 2007/5/6. M. Ichimiya, M. Ashida, H. Yasuda, H. Ishihara and T. Itoh, Ultrafast Radiative Decay of Confined Excitons Due to Long-Range Coherent Coupling with Radiation Wave, 2007/5/6. I. Katayama, H. Shimosato, M. Ashida, I. Kawayama, M. Tonouchi and T. Itoh, Observation of Soft-Mode Hardening and Broadening of SrTiO3 Thin Films by Broadband Teraheltz Time-Domein Spectroscopy, 2007/5/6. May 21-23: The 5th Annual Meeting of Society of Nano Science and Technology (Tsukuba, Japan) K. Inaba, S. Ichikawa, M. Ichimiya, M. Ashida, T. Itoh and S. Takeda, Fabrication of CuCl Nanlparticles by Laser Ablation in Superfluid Helium and Microstructure Observation, 2007/5/ . Y. Sawada, M. Ichimiya, M. Ashida, S. Ozaki, S. Shimomura T. Itoh, Low temperature cathodluminescence properties of GaAs/AlGaAs single layer puramidal cap structures with nano-scale spatial resolution, 2007/5/ . K. Miyajima, K. Inoue, M. Ichimiya, M. Ashida and T. Itoh, Optical Properties of ZnO Nanocrystals Fabricated by Laser Ablation Method in Water, 2007/5/ . M. Ichimiya, M. Ashida, H. Yasuda, H. Ishihara and T. Itoh, Ultrafast Nonlinear Optical Resonance in CuCl Nanostructures, 2007/5/ . June 17-22: The 16th International Conference on Dynamical Processes in Excited States of Solids（Segovia, Spain） I. Katayama, H. Shimosato, M. Ashida, I. Kawayama, M. Tonouchi and T. Itoh, Size effect of the soft ferroelectric mode in SrTiO3 thin films deposited on MgO, 2007/6/ . M. Ichimiya, M. Ashida, H. Yasuda, H. Ishihara and T. Itoh, Femtosecond-class radiative decay of multinode-type excitons in nano-to-bulk crossover regime, 2007/6/ . K. Inaba, K. Imaizumi, K. Katayama, M. Ichimiya, M. Ashida, T. Iida, H. Ishihara and T. Itoh, Optical fabrication and manipulation of CuCl nanoparticles in superfluid helium, 2007/6 . September2-7: IRMMW-THz2007（City Hall, Cardiff, UK） H. Shimosato, I. Katayama, S. Saito, M. Ashida, T. Itoh, Y. Kadoya and K. Sakai, Role of Low-Temperature-Grown GaAs Substrate of Photoconductive Antenna in Broadband Terahertz Time Domain Spectroscopy, 2007/9/ . September10-12: The 10th Conference on the "Optics of Excitons Confined System"（Messina-Patti） K. Miyajima, S. Saito, M. Ashida and T. Itoh, ULTRAFAST SUPERFLUORESCENCE AND LASING OF BIEXCITONS GENERATED UNDER TWO-PHOTON RESONANT EXCITATION IN CUCL QUANTUM DOTS, 2007/9/12. September10-14: The 13th International Conference on II-VI Compounds（Saisyu Iland,Korea） K. Katayama, K. Miyajima, M. Ashida and T. Itoh, Th-P-133: Photoinduced High-Spin State of High-Density Magnetic Polarons in Cd0.8Mn0.2Te, 2007/9/ . September 21-24: The 62nd Annual Meeting of the Physical Society of Japan (Hokkaido University) Y. Umemura, K. Miyajima, K. Katayama, M. Ashida and T. Itoh, 21aTR-2: Magnetic Field Effect on Decay Time of Triplet Excitons in CuCl Quantum Dots, 2007/9/21. K. Inaba, M. Ichimiya, M. Ashida, T. Iida, H. Ishihara and T. Itoh, 21pTR-14: Fabrication of CuCl nanoparticles by laser ablation in superfluid helium and optical manipulation, 2007/9/21. K. Mochizuki, M. Ichimiya, M. Ashida and T. Itoh, 21pPSA-88: Improvement of the crystalline quality of CuCl nano films due to the progress of MBE technique and their nonlinear optical properties, 2007/9/21. H. Shimosatom I. Katayama. S. Saito, M. Ashida, T. Itoh, Y. Kadoya and K. Sakai, 23pPSA-92: Characterization of Photoconductive Antenna Substrate in THz Wave Detection, 2007/9/23. K. Miyajima, M. Ashida and T. Itoh, 23pPSB-21: Time-resolved photoluminescence spectra of biexcitons in CuCl quantum dots by Kerr gate method II, 2007/9/23. September26-28: Handai Nanoscience and Nanotechnology International Symposium 2007（Σ Hall） Y. Umemura, K. Miyajima, K. Katayama, M. Ashida and T. Itoh, Magnetic Field Effect on Triplet Excitons Confined in CuCl Quantum Dots, 2007/9/ . Y. Sawada, M. Ichimiya, M. Ashida, S. Ozaki, S. Shimomura and T. Itoh, Low temperature cathodeluminescence ptoperties of GaAs/AlGaAs pyramidal cap structure with nano-scale spetial resolution, 2007/9/ . K. Inaba, S. Ichikawa, M. Ichimiya, M. Ashida, T. Itoh and S. Takeda, Fabrication of semiconductor quantum dots by laser ablation in superfluid helium and microstructure observation, 2007/9/ . September26-29: The First International Workshop on Material and Information Sciences in High Technologies, MISHT-2007 Invited M. Ashida, Ultrabroadband terahertz spectroscopy using photoconductive antenna, 2007/9/ . November15-17: FIRST INTERNATIONAL WORKSHOP ON NANOTECHNOLOGY AND APPLICATION IWNA 2007 (Vung Tau City, Vietnam) Invited K. Miyajima, M. Ashida and T. Itoh, ULTRAFAST SUPERFLUORESCENCE OF BIEXCITONS IN CUCL QUANTUM DOTS UNDER TWO-PHOTON RESONANT EXCITATION, 2007/11/ . November26-30: 2007 Materials Research Society Fall Meeting (Boston, USA) I. Katayama, H. Shimosato, M. Ashida, I. Kawayama, M. Tonouchi and T. Itoh, Size Effect of SrTiO3 Thin Films Probed with the Broadband Terahertz Time-domain Spectroscopy, 2007/11/27. December1-5: The 2nd International Workshop on "Materials Science and Nano-Engineering"（Awaji Yumebutai） T. Itoh, M. Ashida, K. Miyajima, I. Katayama, K. Katayama and M. Ichimiya, Unconventional optical responses of semiconductor nanostructures, 2007/12/ . K. Inaba, M. Ichimiya, M. Ashida, T. Iida, H. Ishihara and T. Itoh, PB-25: Fabrication and optical manipulation of CuCl particles in superfluid helium, 2007/12/ . I. Katayama, H. Shimosato, M. Ashida, I. Katayama, M. Tonouchi and T. Itoh, PB-26: Origin of the size-effect in quantum paraelectric SrTiO3 thin films probed with the broadband teraheltz time-domain spectroscopy, 2007/12/ . H. Shimosato, I. Katayama, S. Saito, M. Ashida, T. Itoh, Y. Kadoya and K. Sakai, PB-27: Investigation of THz wave detection performance of photoconductive antenna : dependence of growth and annealing temperature, 2007/12/ . Y. Sawada, M. Ichimiya, M. Ashida, S. Ozaki, S. Shimomura and T. Itoh, PB-28: Low temperature cathodoluminescence properties of single layer GaAs/AlGaAs pyramidalcap structure with nanometer-scale spatial resolution, 2007/12/ . K. Miyajima, H. Sawada, T. Yoshioka, M. Ashida and T. Itoh, PB-29: Mid-Infrared Transition between Rydberg 1s and 2p States for Excitons and Biexcitons in CuCl Quantum Dots, 2007/12/ . December 14-15: The 18th Symposium of Association for Condensed Matter Photophysics (Osaka City University) T. Yoshioka, K. Miyajima, H. Sawada, M. Ashida and T. Itoh, IB-20: Mid-infrared Transient Absorption for Excitons and Biexcitons in CuCl, 2007/12/14. Encouragement Prize R. Akai, H. Shimosato, I. Katayama, M. Ashida and T. Itoh, IIA-38: Electric field detection of ultrabroadband THz wave beyond 170 THz using photoconductive antenna, 2007/12/15. H. Shimosato, I. Katayama, S. Saito, M. Ashida, T. Itoh, Y. Kadoya and K. Sakai, IIIA-39: Investigation of THz wave detection performance of photoconductive antenna: dependence of growth and annealing temperature, 2007/12/15. K. Mochizuki, M. Ichimiya, M. Ashida and T. Itoh, IIA-48: Anomalous temperature dependence of the spectral shape of degenerate four-wave mixing in weakly confinend system of CuCl, 2007/12/15. Y. Umemura, K. Miyajima, K. Katayama, M. Ashida and T. Itoh, IIIA-76: Magentic Field Effect on Decay Times of Free and Bound Excitons in CuCl Quantum Dots, 2007/12/15. March 23-26: The 63th Physical Society of Japan 2008 Annual Meeting (Kinki University) R. Akai, H. Shimosato, I. Katayama, M. Ashida and T. Itoh, 24aYJ-3: Development of ultrabroadband time domain spectroscopy from THz to NIR, 2008/3/24. H. Shimosato, I. Katayama, S. Saito, H. Shimakage, M. Tatsumi, Z. Wang, M. Ashida, T. Itoh and K. Sakai, 24aYJ-4: Measurement of superconducting MgB2 thin films by broadband THz time domain spectroscopy, 2008/3/24. T. Yoshioka, K. Miyajima, H. Sawada, M. Ashida and T. Itoh, 26aPS-15: Infared Transient Absorption Spectra for Excitons and Biexcitons in CuCl, 2008/3/26. Y. Umemura, K. Miyajima, K. Katayama, M. Ashida and T. Itoh, 26aPS-17: Magnetic Field Effect on Decay Time of Triplet Excitons in CuCl Quantum Dots II, 2008/3/26. K. Inaba, T. Saito, Y. Saito, M. Ichimiya, M. Ashida, S. Ichikawa, S. Takeda and T. Itoh, 26aPS-59: Fabrication of ZnO nanoparticles by laser ablation in superfluid helium, 2008/3/26. F. Yamada, K. Miyajima, K. Katayama, M. Ashida and T. Itoh, 26aPS-81: g-factor of Z3 exciton in CuCl quantum dots embedded in NaCl, 2008/3/26. 2006 May1-5: The 4th International Conference on Quantum Dots（Chamonix-Mont Blanc, France） Y. Kagotani, K. Miyajima, S. Saito, M. Ashida and T. Itoh, Ultrafast response of biexciton luminescence under two-photon resonant excitation in CuCl quantum dots, 2006/5/3. May 22-26: Quantum Electronics and Laser Science Conference（Long Beach, CA, U.S.A） K. Miyajima, H. Sawada, M. Ashida and T. Itoh, Infrared Transient Absorption Spectra of Excitons and Biexcitons Confined in CuCl Quantum Dots, 2006/5/ . June 26-30: The 7th International Conference on Excitonic Processes in Condensed Matter (Winston-Salem, NC, USA) EXCON PRIZE K. Inaba, K. Imaizumi, K. Katayama, M. Ichimiya, M. Ashida, T. Iida, H. Ishihara and T. Itoh, OPA1-4: Optical manipulation of CuCl nanoparticles under an excitonic resonance condition in superfluid helium, 2006/6/27. Y. Sawada, M. Ichimiya, M. Ashida, S. Shimomura, S. Hiyamizu and T. Itoh, OPA1-6: Cathodoluminescence properties of GaAs/AlGaAs pyramidal cap structures with high spatial resolution, 2006/6/27. M. Ichimiya, M. Ashida, H. Yasuda, H. Ishihara and T. Itoh, OPB1-1: Ultrafast degenerate four-wave mixing in CuCl ultrathin films, 2006/6/29. K. Katayama, K. Miyajima, M. Ashida and T. Itoh, OPB1-3: High density selective excitation effect on excitons in semimagnetic semiconductor CdMnTe, 2006/6/29. K. Miyajima, Y. Kagotani, S. Saito, M. Ashida and T. Itoh, OPB1-4: Ultrashort pulsed emission under two-photon excitation of biexcitons in CuCl quantum dots, 2006/6/29. H. Shimosato, T. Katashima, S. Saito, M. Ashida, T. Itoh and K. Sakai, OPB3-4: Ultrabroadband THz spectroscopy using rapid scanning method, 2006/6/29. August 29 - September 1：The 67th Fall Meeting of Japan Society of Applied Physics (Ritsumei-kan university) Presentation Prize K. Inaba, K. Imaizumi, K. Katayama, M. Ichimiya, M. Ashida, T. Iida, H. Ishihara and T. Itoh, 29p-T-3: Fabrication and optical manipulation of quantum dots in superfluid helium, 2006/8/29. September 3-8: The 16th International Microscopy Congress（Sapporo） M. Ichimiya, Y. Kobayashi, Y. Sawada, M. Ashida and T. Itoh, Cathodoluminescence of CuCl at Low Temperature, 2006/9/7 Y. Tokura, M. Ichimiya, Y. Sawadwa, K. Miyajima, M. Ashida and T. Itoh, Enhancement of Intrinsic Luminescence in ZnO: Zn Microcrystals under Electron Beam Excitation, 2006/9/8/ September 23-26: The Physical Soceity of Japan 2006 autumn meeting (Chiba University) K. Miyajima, Y. Kagotani, K. Sakurai, S. Saito, M. Ashida and T. Itoh, 24aRA-4: Ultrafast luminescence under two-photon excitation of biexcitons in CuCl quantum dots, 2006/9/24. K. Sakurai, Y. Kagotani, K. Miyajima, S. Saito, M. Ashida and T. Itoh, 25aPS-65: Time-resolved photoluminescence spectra of biexcitons in CuCl quantum dots by Kerr gate method, 2006/9/25. K. Katamaya, K. Miyajima, M. Ashida and T. Itoh, 25pWB-11: Dynamics of high-density electron-hole system im semimagnetic semiconductor of CdMnTe, 2006/9/25. M. Ichimiya, Y. Kobayashi, Y. Sawada, M. Ashida and T. Itoh, 26aWH-1: Effect of electron beam irradiation on exciton luminscence in CuCl, 2006/9/26. November 20-22: Handai Nanoscience and Nanotechnology International Symposium (Nakanoshima Center) K. Inaba, K. Imaizumi, K. Katayama, M. Ichimiya, M. Ashida, T. Iida, H. Ishihara and T. Itoh, P-1-10: Optical fabrication and manipulation of semiconductor quantum dots, 2006/11/22. Y. Sawada, M. Ichimiya, M. Ashida, S. Shimomura, S. Hiyamizu and T. Itoh, P-1-11: Nano-scale cathodoluminescence properties of GaAs/AlGaAs pyramidal cap structures, 2006/11/22. December 6-9: International Workshop on Functional Materials (1st IWOFM) to be organized jointly with: 3rd International Workshop on Nanophysics and Nanotechnology (3rd IWONN) (Saigon-Halong Hotel, Halong city, Viet Nam) K.Katayama, K.Miyajima, M.Ashida and T.Itoh, Oscillatory Structures Originated from the Faraday Rotation of a New Nonlinear Photoluminescence Band of Cd0.8Mn0.2Te, 2006/12/ . December 8-9: The 17th Symposium of Association for Condensed Matter Photophysics (Osaka City University) Y. Umemura, K. Miyajima, K. Katayama, M. Ashida and T. Itoh, I B-43: Magnetic Field Effect on Photoluminescence Spectrum and Decay Profiles of Excitons in CuCl Quantum Dots, 2006/12/8. H. Sawada, K. Miyajima, M. Ashida and T. Itoh, I B-44: Size-dependence of Infrared Transient Absorption for Excitons and Biexcitons Confined in CuCl Quantum Dots, 2006/12/8. Y. Sawada, M. Ichimiya, M. Ashia, S. Ozaki, S. Shimomura and T. Itoh, III A-87: Cathodluminescence properties of GaAs/AlGaAs pyramidal cap structures with nano-scale spatial resolution, 2006/12/9. K. Miyajima, Y. Kagotani, K. Sakurai, S. Saito, M. Ashida and T. Itoh, III B-105: Ultrafast luminescence of biexcitons confiend in CuCl quantum dots under two-photon resonant excitation, 2006/12/9. K. Imaizumi, K. Inaba, M. Ichimiya, M. Ashida and T. Itoh, III B-106: Ablation condition for fabrication of CuCl nanoparticles, 2006/12/9. January 10-12: CPT2007 (BELLESALLE Kanda Tokyo, Japan) H. Shimosato, T. Katashima, I. Katayama, S. Saito, M. Ashida, T. Itoh, Y. Kadoya and K. Sakai, Sensitivity and Bandwidth of Photoconductive Antenna in Terahertz Time-Domain Spectroscopy, 2007/1/ . January 20-25: Photonics West 2007 (San Jose Convention Center,San Jose, California, USA) Invited Paper M. Ashida, K. Inaba and T. Itoh, Optical manipulation of semiconductor quantum dots insuperfluid helium, 2007/1/ . 2005 May8-10: The 3rd Annual Meeting of Society of Nano Science and Technology (Sendai) K. Miyajima, Y. Kagotani, S. Saito, M. Ashida and T. Itoh, Biexciton Dynamics and Laser Emission in Semiconductor Nanocrystals, 2005/5. M. Ichimiya, M Hasegawa, H. Ishihara, M. Ashida and T. Itoh, Enhancement of Nonlinear Optical Response in CuCl Nanostructure, 2005/5. Y. Sawada, M. Ichimiya, M. Ashida, S. Shimomura, S. Hiyamizu and T. Itoh, Optical Properties of Pyramidal Structure os GaAs/AlGaAs under Electron Beam Excitation, 2005/5. May22-27: Conference on Laser and Electro-Optics 2005 (Washington, DC, USA) M. Ashida, A. Doi, H. Shimosato, S. Saito, K. Sakai and T. Itoh, Ultrabroadband THz Wave Detection beyond 80THz Using Photoconductive Antenna, 2005/5/22. July 4-8: The 14th International Laser Physics Workshop (Kyoto) Invited T. Itoh, Y. Kagotani, K. Miyajima, M. Ashida and S. Saito, Efficient lasing of confined exciton system in semiconductor quantum dots, 2005/7/ . July11-15: International Quantum Electronics Conference 2005 and the Pacific Rim Conference on Laser and Electro-Optics 2005 (Nippon Toshi Center Hotel, Tokyo) M. Ashida, A. Doi, H. Shimosato, S. Saito, K. Sakai and T. Itoh, Sensitivity of Photoconductive Antenna for Ultrabroadband Terahertz Radiation: Feasibility of detection over 100THz, 2005/7/11. K. Miyajima, Y. Kagotani, S. Saito, M. Ashida and T. Itoh, JTuh4-3: Highly Efficient Biexcitonic Lasing of Semiconductor Quantum Dots under Resonant Two-Photon Excitation, 2005/7/11. M. Ichimiya, M. Hasagawa, H. Ishihara, M. Ashida and T. Itoh, JWAB3-P1: Enhancement of Degenerate Four-Wave Mixing Signal in CuCl Nanostructures with High Crystalline Quality, 2005/7/11. July 25-29: The 14th International Conference on Luminescence (ICL' 05) (Beijin, China) H. Minami, M. Kusunoki, M. Ichimiya, M. Ashida and T. Itoh, Modification of photonic band structure in an ordered polystyrene particle layer by controlling interparticle light-mode interaction, 2005/7/ . August1-5: The 15th International Conference on Dynamical Processes in Exited States of Solids (DPC' 05) (Shanghai, China) Y. Kagotani, K. Miyajima, S. Saito, M. Ashida and T. Itoh, Temporal behavior of biexciton luminescence under two-photon excitation in CuCl quantum dots, 2005/8/ . August2-6: Nonlinear Optics (Waikoloa, Hawaii) M. Minamiguchi, M. Ashida and T. Itoh, Enhancement of quasi-phase-matched second harmonic generation with use of photonic band structure by optimizing densities of light modes, 2005/8/ . August8-11: Conference on Excited State Processes in Electronic and Bio Nanomaterials (ESP2005) (Santa Fe, NM, USA) Invited T. Itoh, Biexcitonic Lasing in CuCl Quantum Dots and its Characteristic Mechanism, 2005/8/10. September7-10: The 2nd International Conference on Spontaneous Coherence in Excitonic Systems (University of Southampton, U.K.) K. Miyajima, Y. Kagotani, M. Ashida, S. Saito and T. Itoh, Two-photon direct generation of biexcitons and their subsequent efficient lasing in CuCl quantum dots, 2005/9/10. September7-11: The 62nd JSAP Spring Meeting, 2005, Fall Meeting of Japan Society of Applied Physics (Tokushima University) M. Minamiguchi, T. Nagao, T. Suzuki, M. Ashida and T. Itoh, 9p-H-20: Enhancement of quasi-phase-matched SHG in 1D photonic crystals of periodic multilayer film, 2005/9/9. H. Shimosato, A. Syouji, S. Saito, M. Ashida, T. Itoh and K. Sakai, 9a-P6-22: Rapid-scanning detection of broadband THz wave using photoconductive antenna, 2005/9/9. September12-16: The 2nd International Conference on II-IV Compounds (Warsaw, Poland) M. Ichimiya, Y. Sawada, M. Ashida and T. Itoh, Free Exciton Luminescence of ZnO: Zn Microcrystals under Electron Beam Excitation, 2005/9/ . K.Katayama, K.Miyajima, T.Katashima, M.Ashida and T.Itoh, Cooperative Magnetic Phenomena of High-Density Localized Excitons in Semimagnetic Semiconductor CdMnTe, 2005/9/ . September19-22: 2005 Autumn Meeting of Physical Society of Japan（Doshisha University） K. Katayama, K. Miyajima, M. Ashida and T. Itoh, 20pPSA-52: High Density excitation effect in semimagnetic semiconductor CdMnTe III, 2005/9/20. K. Inaba, K. Imaizumi, K. Katayama, M. Ashida and T. Itoh, 20pPSB-4: Fabrication of CuCl nanoparticles in superfluid helium, 2005/9/20. K. Miyajima, H. Sawada, M. Ashida and T. Itoh, 20pPSB-5: Infrared Transient Absorption Spectra of Biexciton Confined in CuCl Quantum Dots, 2005/9/20. Y. Sawada, M. Ichimiya, M. Ashida, S. Shimomura, S. Hiyamizu and T. Itoh, 20pPSB-9: Cathodoluminescence spectroscopy of GaAs/AlGaAs pyramidal structure, 2005/9/20. M. Ichimiya, Y. Sawada, M. Ashida and T. Itoh, 21aXF-6: Enhancement of ultraviolet luminescence efficiency in ZnO: Zn phosphor under electron beam excitation, 2005/9/21. September25-30: Joint Conference on Ultrafast Optics V and Applications of High Field and Short Wavelength Source XI (Nara) H. Shimosato, M. Ashida, S. Saito, T. Itoh and K. Sakai, Ultrabroadband detection of terahertz radiation from 0.1 to 100THz with photoconductive antenna, 2005/9/ . M. Ichimiya, H. Ishihara, M. Ashida and T. Itoh, Ultrafast degenerate four-wave mixing at confined exciton resonance in CuCl ultrathin films with high crystalline quality, 2005/9/28. November15-17: The 5th Asia-Pacific Near Field Optics (APNFO-5)（Toki Messe, Niigata） H. Minami, Y. Kurokawa, M. Minamiguchi, M. Ichimiya, M. Ashida and T. Itoh, Change in near-field optical images of an ordered polystyrene particles layer modified by reactive ion etching and its relation with photonic band effect, 2005/11/ . November16-18: International Workshop on Terahertz Technology（Osaka University Nakanoshima Center） H. Shimosato, S. Saito, M. Ashida, T. Itoh and K. Sakai, Ultrabroadband detection of infrared electric field with photoconductive antenna, 2005/11/ . November28-December2: Material Research Society Fall Meeting 2005 (Boston) T. Itoh, Y. Kagotani, K. Miyajima, M. Ashida and S. Saito, Efficient Lasing of confined exciton systems in semiconductor quantum dots, 2005/11/ . January11-13: The Ninth International Symposium on Contemporary Photonics Technology (CPT2006)（Tokyo Conference Center Iidabashi, Tokyo） H. Shimosato, S. Saito, M. Ashida, T. Itoh and K. Sakai, Detection of Ultrabroadband Terahertz Radiation with Photoconductive Antenna: Investigation of Sensitivity in Mid-Infrared Region, 2006/1/ . January30-February1: Handai Nanoscience and Nanotechnology International Symposium（Icho Kaikan, Osaka University, Japan） T. Itoh and M. Ashida, Education, Training and Research Program for Nanoscience and Nanotechnology Unconventional Optical Properties of Semiconductor Quantum Dots, 2006/1/ . Y. Kagotani, K. Miyajima, S. Saito, M. Ashida and T. Itoh, Ultrafast emission of biexcitons under two-photon excitation in CuCl quantum dots, 2006/1/ . M. Ichimiya, M. Hasegawa, M. Ashida, H. Ishihara and T. Itoh, Size-Resonant Enhancement of Degenerate Four-Wave Mixing Signal in CuCl Nanofilms with High Crystalline Quality, 2006/1/ . 2004 May9-10: The 2nd Annual Meeting of Society of Nano Science and Technology (Tokyo Institute of Technology) Y. Kagotani, K. Miyajima, G. Oohata, S. Saito, M. Ashida. K. Edamatsu and T. Itoh, 1PS-15: Laser Emission from Biexciton State in Semiconductor Nanocrystals under Two-Photon Excitation, 2004/5/9. May10-13: Quantum Dots 2004 (Banff, Canada) K. Miyajima, G. Oohata, Y. Kagotani, S. Saito, M. Ashida, K. Edamatsu and T, Itoh, Two-Photon Excitation of Confined Biexcitons in CuCl Quantum Dots, 2004/5/ . G. Oohata, Y. Kagotani, K. Miyajima, S. Saito, M. Ashida, K. Edamatsu and T. Itoh, Stable Biexcitonic Lasing of CuCl Quantum Dots Under Two-Photon Resonant Excitation, 2004/5/ . May16-21: International Quantum Electronics Conference 2004 (San Francisco, USA) K. Miyajima, G. Oohata, Y. Kagotani, S. Saito, M. Ashida, K. Edamatsu and T, Itoh, Two-photon excitation of biexcitons and their lasing in semiconductor quantum dots, 2004/5/16. June4-6: CREST Seminar (Zaou, Yamagata) Participants from Itoh Lab.: T. Itoh, M. Ashida, M. Ichimiya, K. MIyajima, M. Hasegawa and T. Horii, July6-9: EXCON ’04 (Cracow, Poland) Y. Kagotani, K. Miyajima, G. Oohata, S. Saito, M. Ashida, K. Edamatsu and T. Itoh, Two-photon absorption and lasing due to biexciton in CuCl quantum dots, 2004/7/6. S. Watanabe, M. Ashida and T. Itoh, Optical properties of excitons multi- dimensionally confined in GaAs/AlGaAs pyramidal structures, 2004/7/6. T. Horii, T. Hirai, M. Minamiguchi, N. Ohno, M. Ashida and T. Itoh, P4: Ultraviolet and green luminescence of ZnO microcrystals under electron beam and laser excitation, 2004/7/9. A. M. Kapitonov, T. Itoh, U. Woggon, D. Kayser and D. Hommel, P45: Exciton-phonon interaction in sub-monolayer CdSe/ZnSe nanostructures, 2004/7/9. Related Presentation T. Hirai, Y. Harada, S. Hashimoto, T. Itoh and N. Ohno, P57: Luminescence of excitons in mesoscopic ZnO particles, 2004/7/9. August2-6: Nonlinear Optics (Waikoloa, Hawaii) M. Minamiguchi, M. Ashida and T. Itoh, Enhancement of quasi-phase-matched second harmonic generation with use of photonic band structure by optimizing densities of light modes, 2004/8/2. August20: Workshop on Teraherz spectroscopy and its applications (Kyoto University) M. Ashida, Ultrawide-band THz generation and detection, 2004/8/20. September12-15: The Physical Society of Japan 2004 autumn meeting（Aomori University) Y. Kagotani, K. Miyajima, S. Saito, M. Ashida and T. Itoh, 12aXD-1: Lasing from Biexciton State under Two-photon Resonant Excitation in Quantum Dots II, 2004/9/12. K. Miyajima, Y. Kagotani, G. Oohata. M. Ashida, K. Edamatsu and T. Itoh, 13pPSA-62: Two-photon resonant excitation of biexcitons in CuCl quantum dots III, 2004/9/13. K. Katayama, K. Miyajima, A. Kapitonov, M. Ashida and T. Itoh, 13pPSA-77: High density excitation effect in CdMnTe, 2004/9/13. M. Minamiguchi, D. Nagao, T. Suzuki, M. Ashida and T. Itoh, 15aXC-6: Second Harmonic Generation and Photonic Band Effects in Semiconductor/Dielectric Multilayer Structure III, 2004/9/15. 　 Related Presentation G. Oohata, R. Shimizu, K. Edamatsu and T. Itoh, 12pXC-1: Observation of entangled photon pairs generated from biexciton state, 2004/9/12. September21-24: Nano-Science Education Program for students of MC Teachers : M. Ashida, K. Miyajima (Spectroscopy), M. Ichimiya (SEM, AFM) Students : the members coming from Department of Physics or of Earth and Space Science, Graduate School of Science Teachig assistants : M. Minamiguchi (AFM), Y. Kagotani (Absorption), K. Katayama (Photoluminescence), Y. Sawada (SEM) 3rd day (24th): We measured the absorption and photoluminescence spectra of CdSe nanocrystals. In addition, we estimated the size of the nanocrystlas from the absorption peak energies. 2nd day (22th): We tried to observe the single CdSe nanocrystals by SEM and AFM, but it was impossible. Instead of the nanocrystals, we observed various samples that the students were interested in. 1st day (21st): We had the guidance of this lecture, and guide the students to our experimental rooms. October25-31: THE 9th ASIA PACIFIC PHYSICS CONFERENCE - 9th APPC (Hanoi, Vietnam) K. Miyajima, Y. Kagotani, G. Oohata, S. Saito, M. Ashida, K. Edamatsu and T. Itoh, Two-photon Excitation of Biexcitons and Their Lasing in Semiconductor Nanocrystals, 2004/10. M. Minamiguchi, M. Ashida and T. Itoh, Enhancement of Second Harmonic Generation Near the Photonic Band Edge under the Backward Quasi-Phase-Matching Condition, 2004/10. H. Minami, M. Ichimiya, M. Ashida and T. Itoh, Y. Nagatomo, M. Kusunoki,Modification of Photonic Band Generated in Ordered Polystyrene Fine Particle Layers, 2004/10. December3-4: The 15th Symposium of Association for Condensed Matter Photophysics (Kyoto university) K. Katayama, K. Miyajima, A. Kapitonov, M. Ashida and T. Itoh, I-9: High density excitation effect in semimagnetic semiconductor CdMnTe, 2004/12/3. K. Miyajima, Y. Kagotani, M. Ashida and T. Itoh, I-14: Study on biexciton states confined in CuCl quantum dots by resonant two-photon excitation, 2004/12/3. Y. Kagotani, K. Miyajima, M. Ashida and T. Itoh, I-15: Time resolved spectroscopy of biexciton luminescence in CuCl quantum dots under strong excitation, 2004/12/3. M. Minamiguchi, M. Ashida and T. Itoh, II-47: Backward quasi-phase-matched second harmonic generation and photonic band effects in semiconductor/dielectric multilayer structure III, 2004/12/3. M. Kusunoki, H. Minami, M. Ichimiya, M. Ashida and T. Itoh, III-72: Modification in scanning near-field optical microscope imaeg of two-dimensional photonic crystals caused by reactive ion etching, 2004/12/4. T. Horii, Y. Sawada, M. Minamiguchi, M. Ichimiya, M. Ashida and T. Itoh, IV-86: Ultraviolet and green luminescence of ZnO: Zn phosphor powders under electron beam excitation, 2004/12/4. M. Hasegawa, M. Ichimiya, T. Iida, H. Ishihara, M. Ashida and T. Itoh, IV-89: Enhencement effect of four-wave mixing signal due to weakly confiend excitons in CuCl nanostructures, 2004/12/4. A. Doi, H. Shimosato, S. Saito, M. Ashida, T. Itoh, K. Sakai, IV-103: Detection of ultrabroadband teraheltz pulse beyond 80 Thez using photoconductive antenna, 2004/12/4. Related Presentation G. Oohata, Generation of entangled photon pairs from biexcitons in CuCl, 2004/12/4. December11-14: International Workshop on Materials Science and Nano-Engineering T. Itoh, Unconventional optical properties of semiconductor nanostructures, 2004/12. Y. Kagotani, Lasing under two-photon absorption of biexciton in CuCl quantum dots, 2004/12. K. Miyajima, Infrared transient absorption and excited-states of biexciton confined in CuCl qunatum dots, 2004/12. M. Ichimiya, Enhancement of degenerate four-wave mixing signal in CuCl nanostructures, 2004/12. N. T. H. Le, Preparation of Ti1-xCoxO2 and their ferromagnetism, 2004/12. K. Katayama, High density excitation effect on excitons in semimagnetic semiconductor CdMnTe, 2004/12. T. Okada, Faraday microscopy with semimagnetic semiconductor quantum well sensor, 2004/12. M. Minamiguchi, Enhancement of quasi-phase-matced second harmonic generation by optimizing densities of modes in semiconductor/dielectric photonic crystal, 2004/12. January12-14：8th　International Symposium on Contemporary photonics Technology　(Izumi Garden Gallery, Tokyo, Japan) M. Minamiguchi, Enhancement of Quasi-Phase-Matched Second Harmonic Generation by Optimizing Densities of Modes for Second Harmonic and Fundamental Wavelength, 2005/1. A. Doi, Detection of Ultrabroadband Teraherts Pulse beyond 80 THz Using Photoconductive Antenna, 2005/1. March 24-27: The 60th Physical Society of Japan 2005 Annual Meeting (Tokyo Univeristy of Science, Noda Campus) H. Shimosato, A. Doi, S. Saito, M. Ashida, T. Itoh and K. Sakai, 24aPS-61: Generation and detection of broadband THz delectromagnetic wave using photoconductive antennas, 2005/3/24. H. Minami, M. Kusunoki, M. Ichimiya, M. Ashida and T. Itoh, 24aPS-104: Scanning near-field optical microscope images of a two-dimensional LATEX layer and their photonic band effect, 2005/3/24. A. Doi, H. Shimosato, S. Saito, M. Ashida, T. Itoh and K. Sakai, 25aXP-12: Detection of ultrabroadband teraheltz pulse beyond 80THz using photoconductive antenna, 2005/3/25. T. Okada, C. Gourdon, V. Jeudy and T. Itoh, 26pXQ-1: Faraday microscopy with semimagnetic semiconductor quantum well sensor, Magnetic flux patterns in the intermediate state of thin type-I superconductors II, 2005/3/26. K. MIyajima, Y. Kagotani, S. Saito, M. Ashida and T. Itoh, 26pXQ-9: Lasing from Biexciton State under Two-Photon Excitation in Quantum Dots III, 2005/3/26. K. Katayama, T. Katashima, A. Kapitonov, M. Ashida and T. Itoh, 26pYH-6: High Density excitation effect in semimagnetic semiconductor CdMnTe II, 2005/3/26. M. Ichimiya, M. Hasegawa, T. Iida, H, Ishihara, M. Ashida and T. Itoh, 27aXP-2: Size-resonant enhancement of four-wave mixing signal in CuCl nanostructures, 2005/3/27.