Development of low emitance and short pulse photocathode

• Project/Area Number: 23760310
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Electron device/Electronic equipment
• Research Institution: Nagoya University
• Principal Investigator: JIN Xiuguang 名古屋大学, 高等研究院, 特任助教 (20594055)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: 半導体フォトカソード / 応答性 / 短パルス / 高量子効率 / 内部電界 / 電子源 / 超格子 / 量子効率

Research Abstract

Photoemission from several types of AlGaAs based photocathodes has been studied. Graded AlGaAs photocathode with an internal electric field showed short response time and high quantum efficiency. Diffusion model combined with electron drift was developed to describe electron transport in graded AlGaAs layers. Our result demonstrated that the internal electric field is effective to control electron transport. The effect of the band structure on the emittance of the electron beam was also investigated. In the graded AlGaAs photocathode, the emittance was dependent on the topmost active layer

Research Products

• [Journal Article] Nano-scale characterization of GaAsP/GaAs strained superlattice structure by nano-beam electron diffraction (2014)
  • Author(s): X.G. J in, H. Nakahara, K. Saitoh, N. Tanaka, Y. Takeda
  • Journal Title: Appl. Phys. Lett Volume: 104 Pages: 113106-113106
• [Journal Article] Nano-scale characterization of GaAsP/GaAs strained superlattice structure by nano-beam electron diffraction (2014)
  • Author(s): Xiuguang Jin, Hirotaka Nakahara, Koh Saitoh, Nobuo Tanaka, and Yoshikazu Takeda
  • Journal Title: Appl. Phys. Lett. Volume: VOL. 104 Issue: 11 Pages: 113106-113106
  • DOI: 10.1063/1.4869030
  • Peer Reviewed
• [Journal Article] High performance spin-polarized photocathodes using a GaAs/GaAsP strain-compensated superlattice (2013)
  • Author(s): X.G. J in, A. Mano, F. Ichihashi, N. Yamamoto, Y. Takeda
  • Journal Title: Appl. Phys. Express Volume: 6 Pages: 15801-15801
• [Journal Article] Effect of compressive strain relaxation on surface morphology in GaAsP growth on GaP substrate (2013)
  • Author(s): X.G. J in, S. Fuchi, Y. Takeda
  • Journal Title: J. Cryst. Growth Volume: 370 Pages: 204-204
• [Journal Article] Picosecond electron bunches from GaAs/GaAsP strained superlattice photocathode (2013)
  • Author(s): X.G. J in, S. Matsuba, Y. Honda, T. Miyajima, M. Yamamoto, T. Utiyama, Y. Takeda
  • Journal Title: Ultramicroscopy Volume: 130 Pages: 44-48
• [Journal Article] Temporal Response Measurements of GaAs-Based Photocathodes (2013)
  • Author(s): Y. Honda, S. Matsuba, X.G. J in, T. Miyajima,M. Yamamoto, T. Uchiyama, M. Kuwahara, Y. Takeda
  • Journal Title: Jpn. J. Appl. Phys Volume: 52 Pages: 86401-86401
• [Journal Article] Phase-locking of oscillating images using laser-induced spin-polarized pulse TEM (2013)
  • Author(s): M. Kuwahara, Y. Nambo, S. Kusunoki, X.G. Jin, T. Nakanishi, K. Saitoh, H. Asano, T. Ujihara, Y. Takeda, T. Nakanishi, N. Tanaka
  • Journal Title: Microscopy Advance Access Volume: 62 Pages: 607-614
• [Journal Article] Temporal response measurements of GaAs-based photocathodes (2013)
  • Author(s): Y.Honda, S.Matsubara, X.G.Jin, T.Miyajima, M.Yamamoto, T.Uchiyama, M.Kuwahara, and Y.Takeda
  • Journal Title: Japanese Journal of Applied Physics Volume: Vol.52 Issue: 8R Pages: 86401-86401
  • DOI: 10.7567/jjap.52.086401
  • NAID: 210000142576
  • Peer Reviewed
• [Journal Article] Effect of compressive strain relaxation on surface morphology in GaAsP growth on GaP substrate (2013)
  • Author(s): X.G.Jin, S.Fuchi, and Y.Takeda
  • Journal Title: Journal of Crystal Growth Volume: Vol.370 Pages: 204-207
  • DOI: 10.1016/j.jcrysgro.2012.09.008
  • Peer Reviewed
• [Journal Article] High-performance spin-polarized photocathodes using a GaAs/GaAsP strain-compensated superlattice (2013)
  • Author(s): X.G.Jin, A.Mano, F.Ichihashi, N.Yamamoto, and Y.Takeda
  • Journal Title: Applied Physics Express Volume: Vol.6 Issue: 1 Pages: 125801-125801
  • DOI: 10.7567/apex.6.015801
  • NAID: 10031140457
  • Peer Reviewed
• [Journal Article] Mean Transverse Energy Measurement of Negative Electron Affinity GaAs-based Photocathode (2012)
  • Author(s): S. Matrsuba, Y. Honda, X.G. J in, T. Miyajima, M. Yamamoto, T. Uchiyama, M. Kuwahara, Y. Takeda
  • Journal Title: Jpn. J. Appl. Phys Volume: 51 Pages: 46402-46402
• [Journal Article] Analysis of thickness modulation in GaAs/GaAsP strained superlattice by TEM observation (2012)
  • Author(s): X.G. J in, H. Nakahara, K. Saitoh, T. Saka, T. Ujihara, N. Tanaka, Y. Takeda, J. Cryst
  • Journal Title: Growth Volume: 353 Pages: 84-84
• [Journal Article] Fourfold increase of quantum efficiency in highly spin-polarized transmission-type photocathode (2012)
  • Author(s): X.G. J in, F. Ichihashi, A. Mano, N. Yamamoto, Y. Takeda
  • Journal Title: Jpn. J. Appl. Phys Volume: 51 Pages: 108004-108004
• [Journal Article] 30-kV spin-polarized transmission electron microscope using a GaAs-GaAsP strained superlattice photocathode (2012)
  • Author(s): M. Kuwahara, S. Kusunoki, X.G. Jin, T. Nakanishi, Y. Takeda, K. Saitoh, T. Ujihara, H. Asano, N. Tanaka
  • Journal Title: Appl. Phys. Lett Volume: 101 Pages: 33102-33102
• [Journal Article] Mean Transverse Energy Measurement of Negative Electron Affinity GaAs-Based Photocathode (2012)
  • Author(s): S.Matduba
  • Journal Title: Japanese Journal of Applied Physics Volume: 51 Issue: 4R Pages: 46402-46402
  • DOI: 10.1143/jjap.51.046402
  • Peer Reviewed
• [Journal Article] Analysis of thickness modulation in GaAs/GaAsP strained superlattice by TEM observation (2012)
  • Author(s): X. Jin, H. Nakahara, K. Saitoh, T. Saka, T. Ujihara, N. Tanaka, Y. Takeda
  • Journal Title: Journal of Crystal Growtｈ Volume: 353 Issue: 1 Pages: 84-87
  • DOI: 10.1016/j.jcrysgro.2012.05.017
  • Peer Reviewed
• [Journal Article] Fourfold increase of quantum efficiency in highly spin-polarized transmission-type photocathode (2012)
  • Author(s): X.G.Jin, F.Ichihashi, A.Mano, N.Yamamoto, and Y.Takeda
  • Journal Title: Japanese Journal of Applied Physics Volume: Vol.51 Issue: 10R Pages: 108004-108004
  • DOI: 10.1143/jjap.51.108004
  • NAID: 210000141406
  • Peer Reviewed
• [Journal Article] 30-kV spin-polarized transmission electron microscope using GaAs-GaAsP strained superlattice photocathode (2012)
  • Author(s): Makoto Kuwahara, Xiuguang Jin, Yoshikazu Takeda他
  • Journal Title: Applied Physics Letters Volume: 101 Issue: 3 Pages: 0331021-0331024
  • DOI: 10.1063/1.4737177
  • Peer Reviewed
• [Journal Article] Elimination of local thickness modulation in GaAs/GaAsP strained superlattices for high (2011)
  • Author(s): X.G. Jin, Y. Maeda, T. Sasaki, S. Arai, S. Fuchi, T. Ujihara, and Y. Takeda
  • Journal Title: J. Phys.: Conference Series Volume: 298 Pages: 12011-12011
  • Peer Reviewed
• [Journal Article] Status of the high brightness polarized electron source suing transmission photocathode (2011)
  • Author(s): N. Yamamoto, X.G. Jin, A. Mano, T. Ujihara, Y. Takeda, S. Okumi, T. Nakanishi, T. Yasue, T. Koshikawa, T. Ohshima, T. Saka, H. Horinaka
  • Journal Title: J. Phys.: Conference Series Volume: 298 Pages: 12017-12017
  • Peer Reviewed
• [Presentation] Nano-scale characterization of GaAsP/GaAs strained superlattice structures by nano-beam electron diffraction (2013)
  • Author(s): X.G. J in, H. Nakahara, K. Saitoh, N. Tanaka, Y. Takeda
  • Organizer: 17^<th> International Conference on Crystal Growth and Epitaxy
  • Place of Presentation: Mo116, Warsaw, Poland(Poster)
• [Presentation] High performance spin-polarized photocathode using GaAs/GaAsP strain-compensated superlattice (2013)
  • Author(s): X.G. J in, N. Yamamoto, A. Mano, M. Yamamoto, Y. Takeda
  • Organizer: 2013 International Workshop on Polarized Sources, Targets & Polarimetry
  • Place of Presentation: The University of Virginia, Charlottesville, USA
• [Presentation] Novel development of very high brightness and highly spin-polarized electron gun with compact 3D spin manipulator for SPLEEM (2013)
  • Author(s): T. Koshikawa, T. Yasue, M. Suzuki, K. Tsuno, S. Goto, X.G. J in, Y. Takeda
  • Organizer: IVC-19/ICSS-15 AND ICN+T
  • Place of Presentation: Paris, France
• [Presentation] Nano-scale characterization of GaAsP/GaAs strained superlattice structures by nano-beam electron diffraction (2013)
  • Author(s): X.G. Jin, H. Nakahara, K. Saitoh, N. Tanaka, Y. Takeda
  • Organizer: 17th International Conference on Crystal Growth and Epitaxy
  • Place of Presentation: Poland
• [Presentation] High performance spin-polarized photocathode using GaAs/GaAsP strain-compensated superlattice (2013)
  • Author(s): X.G. Jin, N. Yamamoto, A. Mano, M. Yamamoto, Y. Takeda
  • Organizer: The 2013 International Workshop on Polarized Sources, Targets & Polarimetry
  • Place of Presentation: The University of Virginia, USA
• [Presentation] ovel development of very high brightness and highly spin-polarized electron gun with compact 3D spin manipulator for SPLEEM (2013)
  • Author(s): T. Koshikawa, T. Yasue, M. Suzuki, K. Tsuno, S. Goto, X.G. Jin and Y. Takeda
  • Organizer: IVC-19/ICSS-15 AND ICN+T
  • Place of Presentation: Paris, France
• [Presentation] LEEM and AES study of negative electron affinity GaAs photocathode degradation process (2013)
  • Author(s): X.G. Jin, A. Cotta, G. Chen, A. N`Diaye, A. K. Schmid, Y. Takeda
  • Organizer: 9th International Symposium on Atomic Level Characterization for New Materials and Devices
  • Place of Presentation: Hawaii, USA
• [Presentation] Effect of compressive strain relaxation on surface morphology in GaAsP growth on GaP substrate (2012)
  • Author(s): X.G. J in, S. Fuchi, Y. Takada
  • Organizer: 16^<th> International Conference on Metal Organic Vapor Phase Epitaxy
  • Place of Presentation: Paradise Hotel, Busan, Korea(TuP-74)
• [Presentation] Effects of mis-orientation of crystal planes on thickness modulation in GaAs/GaAsP strained superlattice (2012)
  • Author(s): X.G. J in, H. Nakahara, K. Saitoh, T. Saka, H. Katruno, N. Tanaka, Y. Takeda
  • Organizer: 16^<th> International Conference on Metal Organic Vapor Phase Epitaxy
  • Place of Presentation: Busan, Korea(WeP-61)
• [Presentation] Initial emittance and temporal response measurement for GaAs based photocathodes (2012)
  • Author(s): S. Matsuba, Y. Honda, T. Miyajima, T. Uchiyama, M. Yamamoto, X.G. J in, Y. Takeda
  • Organizer: International Particle Accelerator Conference 2012, MOPPP035
  • Place of Presentation: Ernest N. Morial onvention Center, New Orleans Louisiana, USA
• [Presentation] High performance spin-polarized photocathode for microscopy (2012)
  • Author(s): X.G. J in, F. Ichihashi, A. Mano, N.Yamamoto, M. Suzuki, T. Yasue, T. Koshikawa, N. Tanaka, Y. Takeda
  • Organizer: 14^<th> Joint Vacuum Conference
  • Place of Presentation: Libertas Rixos Hotel, Dubrovnik, Croatia(EMP-O41)
• [Presentation] Development of high performance photocathodes for microscopy and accelerator (2012)
  • Author(s): X.G. J in, F. Ichihashi, A. Mano, N. Yamamoto, Y. Takeda, M. Yamamoto, T. Miyajima, Y. Honda, T. Uchiyama, S. Matsuba
  • Organizer: Photocathode Physics for Photoinjectors (P3)
  • Place of Presentation: Cornell University, Ithaca, NY, USA
• [Presentation] High performance spin-polarized photocathode using strain compensated superlattice (2012)
  • Author(s): X.G. J in, A. Mano, F. Ichihashi, N. Yamamoto,○Y. Takeda
  • Organizer: 8^<th> international workshop on LEEM/PEEM
  • Place of Presentation: Regal Kowloon Hotel, Hong Kong
• [Presentation] Picosecond electron bunch from GaAs/GaAsP strained superlattice photocathode (2012)
  • Author(s): X.G. J in, S. Matsuba, T. Miyajima, Y. Honda, M. Yamamoto, T. Utiyama, Y. Takeda
  • Organizer: 8^<th> international workshop on LEEM/PEEM
  • Place of Presentation: Regal Kowloon Hotel, Hong Kong(Poster-session)
• [Presentation] Effect of compressive strain relaxation on surface morphology in GaAsP growth on GaP (2012)
  • Author(s): X.G. Jin, S. Fuchi, Y. Takada
  • Organizer: 16th International Conference on Metal Organic Vapor Phase Epitaxy
  • Place of Presentation: Paradise Hotel (Korea)
• [Presentation] Effects of mis-orientation of crystal planes on thickness modulation in GaAs/GaAsP strained superlattice (2012)
  • Author(s): X.G. Jin, H. Nakahara, K. Saitoh, T. Saka, H. Katruno, N. Tanaka, Y. Takeda
  • Organizer: 16th International Conference on Metal Organic Vapor Phase Epitaxy
  • Place of Presentation: Paradise Hotel (Korea)
• [Presentation] Initial emittance and temporal response measurement for GaAs based photocathodes (2012)
  • Author(s): S. Matsuba, Y. Honda, T. Miyajima, T. Uchiyama, M. Yamamoto, X.G. Jin, Y. Takeda
  • Organizer: International Particle Accelerator Conference 2012
  • Place of Presentation: Morial Convention Center(USA)
• [Presentation] High performance spin-polarized photocathode for microscopy (2012)
  • Author(s): X.G. Jin, F. Ichihashi, A. Mano, N. Yamamoto, M. Suzuki, T. Yasue, T. Koshikawa,
  • Organizer: 14th Joint Vacuum Conference
  • Place of Presentation: Libertas Rixos Hotel (Croatia)
• [Presentation] Development of high performance photocathodes for microscopy and accelerator (2012)
  • Author(s): X.G. Jin, F. Ichihashi, A. Mano, N. Yamamoto, Y. Takeda, M. Yamamoto,
  • Organizer: Photocathode Physics for Photoinjectors
  • Place of Presentation: Cornell University (USA)
  • Invited
• [Presentation] High performance spin-polarized photocathode using strain compensated superlattice (2012)
  • Author(s): X.G. Jin, A. Mano, F. Ichihashi, N. Yamamoto, Y. Takeda
  • Organizer: 8th international workshop on LEEM/PEEM
  • Place of Presentation: Regal Kowloon Hotel (Hong kong)
• [Presentation] Picosecond electron bunch from GaAs/GaAsP strained superlattice photocathode (2012)
  • Author(s): X.G. Jin, S. Matsuba, T. Miyajima, Y. Honda, M. Yamamoto, T. Utiyama, Y. Takeda
  • Organizer: 8th international workshop on LEEM/PEEM
  • Place of Presentation: Regal Kowloon Hotel (Hong kong)
• [Presentation] Development of novel compact spin-polarized electron gun (2012)
  • Author(s): T.Koshikawa, T.Yasue, M.Suzuki, K.Tsuno, S.Goto, X.G. Jin, Y.Takeda
  • Organizer: 8th international workshop on LEEM/PEEM
  • Place of Presentation: Regal Kowloon Hotel (Hong kong)
• [Presentation] 高輝度・高スピン偏極低エネルギー電子顕微鏡の開発とスピントロニクス磁性 (2012)
  • Author(s): 越川 孝範、鈴木 雅彦、安江 常夫、E. Bauer、 中西 彊、金 秀光、
  • Organizer: 第53回真空に関する連合講演会
  • Place of Presentation: 甲南大学 (兵庫県)
  • Invited
• [Presentation] Novel development of very high brightness and highly spin-polarized electron gun with compact 3D spin manipulator (2012)
  • Author(s): T.Koshikawa, T.Yasue, M.Suzuki, K.Tsuno, S.Goto, X.G. Jin and Y.Takeda
  • Organizer: 第11回顕微ナノ材料科学研究会
  • Place of Presentation: 慶應義塾大学 (東京都)
  • Invited
• [Presentation] Super-high brightness and high spin-polarization photocathode for spin-polarized LEEM and (2011)
  • Author(s): X.G. Jin, A. Mano, N. Yamamoto, M. Suzuki, T. Yasue, T. Koshikawa, N. Tanaka,
  • Organizer: The 19th international conference on electronic properties of two-dimensional systems
  • Place of Presentation: Tallahassee, Florida, USA
• [Presentation] Highly Polarized and High Quantum Efficiency Electron Source Using Transmission-type (2011)
  • Author(s): X.G. Jin, F. Ichihashi1, A. Mano, N. Yamamoto, T. Nakanishi, T. Ujihara, Y. Takeda
  • Organizer: 2nd international particle accelerator conference
  • Place of Presentation: San Sebastian Spain
• [Presentation] 4 Times Improvement of Quantum Efficiency in High Spin-Polarization Transmission-Type (2011)
  • Author(s): F. Ichihashi, X.G. Jin, N. Yamamoto, A. Mano, S. Fuchi, T. Ujihara, Y. Takeda
  • Organizer: 33rd International Free Electron Laser Conference
  • Place of Presentation: Shanghai, China
• [Presentation] Effect of inhomogeneous strain distribution on the thickness modulation in GaAs/GaAsP (2011)
  • Author(s): X.G. Jin, H. Nakahara, K. Saitoh, T. Saka, T. Ujihara, N. Tanaka, Y. Takeda
  • Organizer: 24th International Microprocesses and Nanotechnology Conference
  • Place of Presentation: Kyoto, Japan
• [Patent(Industrial Property Rights)] スピン偏極電子発生素子及びその作製方法 (2012)
  • Inventor(s): 金 秀光
  • Industrial Property Rights Holder: 金 秀光,渕 真悟,竹田美和
  • Filing Date: 2012
• [Patent(Industrial Property Rights)] 半導体フォトカソード (2012)
  • Inventor(s): 金 秀光
  • Industrial Property Rights Holder: 金 秀光,竹田美和,山本将博,宮島 司,本田洋介
  • Filing Date: 2012
• [Patent(Industrial Property Rights)] スピン偏極電子発生素子及びその作製方法 (2012)
  • Inventor(s): 金 秀光、渕 真悟、竹田美和
  • Industrial Property Rights Holder: 金 秀光、渕 真悟、竹田美和
  • Industrial Property Rights Type: 特許
  • Filing Date: 2012-05-01
• [Patent(Industrial Property Rights)] 半導体フォトカソード (2012)
  • Inventor(s): 金 秀光、竹田美和、山本将博、宮島 司、本田洋介
  • Industrial Property Rights Holder: 金 秀光、竹田美和、山本将博、宮島 司、本田洋介
  • Industrial Property Rights Type: 特許
  • Filing Date: 2012-10-01