加藤 政博MASAHIRO KATO

Last Updated :2025/05/09

所属・職名
放射光科学研究所　特任教授
メールアドレス
mkatohhiroshima-u.ac.jp
自己紹介
電子加速器を用いて光を作ること、その光の性質を調べること、それを制御することに興味を持って研究を行っています。

基本情報

学位

  • 理学修士（東京大学）　(東京大学)
  • 理学博士（東北大学）　(東北大学)

教育担当

  • 【博士課程前期】 先進理工系科学研究科 : 先進理工系科学専攻 : 物理学プログラム
  • 【博士課程後期】 先進理工系科学研究科 : 先進理工系科学専攻 : 物理学プログラム

研究キーワード

  • ビーム物理学
  • 粒子加速器
  • 電子
  • 相対論
  • シンクロトロン
  • シンクロトロン光
  • 放射光
  • アンジュレータ
  • 自由電子レーザー
  • コンプトン散乱
  • レーザー
  • テラヘルツ
  • 真空紫外線
  • X線
  • ガンマ線

教育活動

授業担当

  1. 2025年, 学部専門, セメスター（前期）, 卒業研究Ａ
  2. 2025年, 学部専門, セメスター（後期）, 卒業研究Ｂ
  3. 2025年, 修士課程・博士課程前期, １ターム, 放射光科学特論Ａ
  4. 2025年, 修士課程・博士課程前期, ２ターム, 放射光科学特論Ｂ
  5. 2025年, 修士課程・博士課程前期, セメスター（後期）, 放射光科学院生実験
  6. 2025年, 修士課程・博士課程前期, セメスター（前期）, 物理学演習Ⅰ
  7. 2025年, 修士課程・博士課程前期, セメスター（後期）, 物理学演習Ⅱ
  8. 2025年, 修士課程・博士課程前期, セメスター（前期）, 物理学特別演習Ａ
  9. 2025年, 修士課程・博士課程前期, セメスター（後期）, 物理学特別演習Ｂ
  10. 2025年, 修士課程・博士課程前期, 年度, 物理学特別研究
  11. 2025年, 博士課程・博士課程後期, 年度, 物理学特別研究

研究活動

学術論文（★は代表的な論文）

  1. Spectral phase interferometry for direct electric-field reconstruction of synchrotron radiation, OPTICA, 10巻, 2号, pp. 302-307, 20230220
    DOIを用いた論文検索結果へのリンク
  2. Double-pulsed wave packets in spontaneous radiation from a tandem undulator, SCIENTIFIC REPORTS, 12巻, 1号, 20220611
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  3. Time-Domain Eddy Current and Wake Fields Analysis of Pulsed Multipole Magnet Beam Injector in Synchrotron Radiation Ring, IEICE TRANSACTIONS ON ELECTRONICS, E105C巻, 4号, pp. 146-153, 202204
    DOIを用いた論文検索結果へのリンク
  4. Orbital angular momentum of Liénard–Wiechert fields, Progress of Theoretical and Experimental Physics, 2019(8)巻, pp. 083A02-1-18, 2019
    DOIを用いた論文検索結果へのリンク
  5. pn -type substrate dependence of CsK2Sb photocathode performance, Physical Review Accelerators and Beams, 20190300
  6. Demonstration of tomographic imaging of isotope distribution by nuclear resonance fluorescence, AIP Advances, 9巻, 3号, 20190300
  7. Generation of vector beam with tandem helical undulators, Applied Physics Letters, 113巻, 2号, 20180700
  8. Generation of Optical Vortices by Nonlinear Inverse Thomson Scattering at Arbitrary Angle Interactions, The Astrophysical Journal, 860巻, 1号, pp. 45, 20180600
  9. Gamma-ray vortices emitted from nonlinear inverse Thomson scattering of a two-wavelength laser beam, Physical Review A, 98巻, 5号, 20180000
  10. Generation of 1-MeV quasi-monochromatic gamma-ray for precise measurement of Delbrück scattering by laser Compton scattering, Journal of Physics: Conference Series, 1067巻, 9号, 20180000
  11. Angular Momentum of Twisted Radiation from an Electron in Spiral Motion, Physical Review Letters, 118巻, 9号, pp. 094801-1-094801-5, 20170300
  12. Observation of an optical vortex beam from a helical undulator in the XUV region, Journal of Synchrotron Radiation, 24巻, 5号, pp. 934-938, 20170000
  13. Limitations in photoionization of helium by an extreme ultraviolet optical vortex, Physical Review A, 95巻, 2号, 20170000
  14. Helical Phase Structure of Radiation from an Electron in Circular Motion, Scientific Reports, 7巻, 1号, 20170000
  15. Gamma-ray vortices from nonlinear inverse Thomson scattering of circularly polarized light, Scientific Reports, 7巻, 1号, 20170000
  16. Generation of High Energy Gamma-ray by Laser Compton Scattering of 1.94-m Fiber Laser in UVSOR-III Electron Storage Ring, Energy Procedia, 89巻, pp. 335-345, 20160000
  17. Investigation of the electrical field sensitivity of sub-μm Y-Ba-Cu-O detectors, IEEE Transactions on Applied Superconductivity, 25巻, 3号, 20150000
  18. Transient response of relativistic electron bunches to wave-number selected perturbations near the micro-bunching instability threshold, New Journal of Physics, 16巻, 20140000
  19. Microbunching Instability in Relativistic Electron Bunches: Direct Observations of the Microstructures Using Ultrafast YBCO Detectors, Physical Review Letters, 113巻, 9号, pp. 094801, 20140000
  20. Beam injection with pulsed multipole magnet at UVSOR-III, Nuclear Instruments and Methods in Physics Research A, 767巻, pp. 26-33, 20140000
  21. Saturation of the laser-induced narrowband coherent synchrotron radiation process: Experimental observation at a storage ring, Physical Review Special Topics - Accelerators and Beams, 16巻, 2号, 20130000
  22. Photoreaction of rac-Leucine in Ice by Circularly Polarized Synchrotron Radiation: Temperature-Induced Mechanism Swithing from Norrish Type II to Deamination, CHEMISTRY a European Journal, 19巻, 41号, pp. 13929-13936, 20130000
  23. Photon-induced positron annihilation lifetime spectroscopy using ultrashort laser-Compton-scattered gamma-ray pulses, Review of Scientific Instruments, 84巻, 5号, 20130000
  24. High-speed Y-Ba-Cu-O direct detection system for monitoring picosecond THz pulses, IEEE Transactions on Terahertz Science and Technology, 3巻, 1号, pp. 81-86, 20130000
  25. Design and construction of UVSOR-III, Journal of Physics: Conference Series, 425巻, PART 4号, 20130000
  26. Construction of the scanning transmission X-ray microscope beamline at UVSOR, Journal of Physics: Conference Series, 463巻, 1号, 20130000
  27. Terahertz photonics: Coherent terahertz synthesizer, Nature Photonics, 6巻, 2号, pp. 76-77, 20120000
  28. Suppression of self-pulsing instabilities in free-electron lasers using delayed optical feedback, Physical Review Special Topics - Accelerators and Beams, 15巻, 4号, 20120000
  29. Pulse width measurement of laser Compton scattered gamma rays in picosecond range, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 695巻, pp. 233-237, 20120000
  30. Electric field detection of coherent synchrotron radiation in a storage ring generated using laser bunch slicing, Applied Physics Letters, 100巻, 11号, pp. 111112, 20120000
  31. Design of a dedicated beamline for THz coherent synchrotron radiation at UVSOR-III, Journal of Physics: Conference Series, 359巻, 1号, 20120000
  32. Ultra-short coherent terahertz radiation from ultra-short dips in electron bunches circulating in a storage ring, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 637巻, 1 SUPPL.号, 20110000
  33. Generation of energy-tunable and ultrashort-pulse gamma ray via inverse Compton scattering in an electron storage ring, Nuclear Instruments and Methods in Physics Research Section A, 652巻, 1号, pp. 696-700, 20110000
  34. Feasibility study of ultra-short gamma ray pulse generation by laser Compton scattering in an electron storage ring, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 637巻, 1 SUPPL.号, 20110000
  35. Systematic study on Ce:LuLiF4 as a fast scintillator using storage ring free-electron lasers, Japanese Journal of Applied Physics, 49巻, 12号, 20100000
  36. Status and prospects of coherent light source developments at UVSOR-II, AIP Conference Proceedings, 1234巻, pp. 491-494, 20100000
  37. Remaining noise-induced spatiotemporal dynamics in a free electron laser stabilized by feedback control, European Physical Journal D, 59巻, 3号, pp. 451-455, 20100000
  38. Observation of saturation Effect on Vacuum Ultraviolet Coherent Harmonic Generation at UVSOR-II, Applied Physics Express, 3巻, 12号, pp. 122702-KM006350, 20100000
  39. Laser-induced narrowband coherent synchrotron radiation: Efficiency versus frequency and laser power, Physical Review Special Topics - Accelerators and Beams, 13巻, 9号, 20100000
  40. Full energy injection and top-up operation at UVSOR-II, AIP Conference Proceedings, 1234巻, pp. 531-534, 20100000
  41. Design of terahertz pump - Photoemission probe spectroscopy beamline at UVSOR-II, AIP Conference Proceedings, 1234巻, pp. 63-65, 20100000
  42. Coherent synchrotron terahertz radiation using electron bunch slicing, IRMMW-THz 2010 - 35th International Conference on Infrared, Millimeter, and Terahertz Waves, Conference Guide, 20100000
  43. Central Japan synchrotron radiation research facility project-(II), AIP Conference Proceedings, 1234巻, pp. 591-594, 20100000
  44. SAMRAI: A novel variably polarized angle-resolved photoemission beamline in the VUV region at UVSOR-II, Review of Scientific Instruments, 81巻, 5号, pp. 053104, 20100000
  45. Shifted Feedback Suppression of Turbulent Behavior in Advection-Diffusion Systems, Physical Review Letters, 102巻, 13号, pp. 134501, 20090000
  46. Transverse-Longitudinal Coupling Effect in Laser Bunch Slicing, Physical Review Letters, 103巻, 14号, pp. 144802, 20090000
  47. Observation of Synchrotron Sidebands in a Storage-Ring-Based Seeded Free-Electron Laser, Physical Review Letters, 102巻, 1号, pp. 014801, 20090000
  48. Chirality Emergence in Thin Solid Films of Amino Acids by Polarized Light from Synchrotron Radiation and Free Electron Laser, International Journal of Molecular Sciences, 10巻, pp. 3044, 20090000
  49. Tunable narrowband terahertz emission from mastered laser–electron beam interaction, Nature Physics, 4巻, 390-393号, pp. 390-393, 20080000
  50. Optimization of a Seeded Free-Electron Laser with Helical Undulators, Physical Review Letters, 101巻, 16号, pp. 164803, 20080000
  51. Local heating induced by Coherent Harmonic Generation on electron beam dynamics in storage ring, EPL, 81巻, 3号, 20080000
  52. Coherent Harmonic Generation Experiments on UVSOR-II Storage Ring, Nuclear Instruments and Methods in Physics Research, A 593巻, 1-5号, 20080000
  53. Touschek lifetime measurement withaspurious bunch in UVSOR-II electron storage ring, 8th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators, DIPAC 2007, pp. 280-282, 20070000
  54. Present status of UVSOR-II, AIP Conference Proceedings, 879巻, pp. 192-195, 20070000
  55. Nagoya university photo-science nanofactory project, AIP Conference Proceedings, 879巻, pp. 75-78, 20070000
  56. Design of a high resolution and high flux beam line for VUV angle-resolved photoemission at UVSOR-II, AIP Conference Proceedings, 879巻, pp. 527-530, 20070000
  57. Intense Terahertz Synchrotron Radiation by Laser Bunch Slicing at UVSOR-II Electron Storage Ring, Japanese Journal of Applied Physics, 46巻, 12号, pp. 7939-7944, 20070000
  58. Coherent terahertz radiation at UVSOR-II, AIP Conference Proceedings, 879巻, pp. 71-74, 20070000
  59. Coherent harmonic generation at UVSOR-II storage ring, The European Physical Journal D, 44巻, 1号, pp. 187-200, 20070000
  60. Touschek lifetime measurement with a spurious bunch in single bunch operation in the UVSOR-II electron storage ring, Nuclear Instruments and Methods in Physics Research A, 572巻, 3号, pp. 1033-1041, 20070000
  61. Measurements of threshold photoemission magnetic dichroism using ultraviolet lasers and a photoelastic modulator, Review of Scientific Instruments, 78巻, pp. 023907, 20070000
  62. Infrared and terahertz spectromicroscopy beam line BL6B(IR) at UVSOR-II, Infrared Physics and Technology, 49巻, 1-2号, pp. 147-151, 20060000
  63. Longitudinal and transverse heating of a relativistic electron bunch induced by a storage ring free electron laser, Physical Review Special Topics Accelerators and Beams, 9巻, pp. 100701, 20060000
  64. Observation of intense bursts of terahertz synchrotron radiation at UVSOR-II, Japanese Journal of Applied Physics, Part 2: Letters, 44巻, 33-36号, 20050000
  65. Ion Trapping Phenomenon in UVSOR Electron Storage Ring, Japanese Journal of Applied Physics, Vol. 44, No. 1A, pp. 430-437巻, 20050000
  66. Construction of the undulator beamline equipped with a UHV-STM for observations of synchrotron-radiation-stimulated surface reaction, Journal of Electron Spectroscopy and Related Phenomena, 144-147 1113-1116巻, 20050000
  67. Status and prospects of user applications of the UVSOR storage ring free electron laser, AIP Conference Proceedings, 705巻, pp. 61-64, 20040000
  68. New infrared and terahertz beam line BL6B at UVSOR, AIP Conference Proceedings, 705巻, pp. 416-419, 20040000
  69. In-vacuum undulators in UVSOR electron storage ring, AIP Conference Proceedings, 705巻, pp. 259-262, 20040000
  70. Design and performance of undulator beamline (BL7U) for in-situ observation of synchrotron radiation stimulated etching by STM, AIP Conference Proceedings, 705巻, pp. 368-371, 20040000
  71. Construction and commissioning of UVSOR-II, AIP Conference Proceedings, 705巻, pp. 49-52, 20040000
  72. The investigation of excited states of Xe atoms and dimmers by synchronization of FEL and SR pulses at UVSOR, Nuclear Instruments and Methods in Physics Research A, 528, 627-631巻, 20040000
  73. Upgrade of the UVSOR storage ring FEL, Nuclear Instruments and Methods in Physics Research A, 528, 291-295巻, 20040000
  74. Q-switching Operation of the UVSOR-FEL, Nuclear Instruments and Methods in Physics Research A, 507, 289-293巻, 20030000
  75. From the operation of an SRFEL to a users facility, Nuclear Instruments and Methods in Physics Research A, 483巻, pp. 146-151, 20020000
  76. Design study of a storage ring light source at Tohoku University, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 467-468巻, pp. 72-75, 20010000
  77. New Lattice for UVSOR, Nuclear Instruments and Methods in Physics Research A, 467-468巻, pp. 68-71, 20010000
  78. Bunch lengthening in compact SR source HiSOR, Nuclear Instruments and Methods in Physics Research A, 467-468巻, pp. 95-98, 20010000
  79. Development of longitudinal feedback system for a storage ring free electron laser, Nuclear Instruments and Methods in Physics Research A, 475巻, pp. 211-216, 20010000
  80. FEL induced electron bunch heating observed by a method based on synchrotron phase detection, Nuclear Instruments and Methods in Physics Research A, 475巻, pp. 217-221, 20010000
  81. Ultra-short Pulses of Synchrotron Radiation on Storage Rings, Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 38巻, 5 PART 2号, pp. 547549, 19990000
  82. Reconstruction for the brilliance-upgrading project of the Photon Factory storage ring, Journal of Synchrotron Radiation, 5巻, 3号, pp. 366-368, 19980000
  83. Single-pass BPM system of the Photon Factory storage ring, Journal of Synchrotron Radiation, 5巻, 3号, pp. 618-620, 19980000
  84. Design of a synchrotron radiation source at Tohoku University, Journal of Synchrotron Radiation, 5巻, 3号, pp. 339-341, 19980000
  85. Dynamic aperture for high-brilliance optics of the photon factory storage ring, Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 36巻, 12 A号, pp. 7415-7426, 19970000
  86. "Dynamic Aperture for High Brilliance Optics of the Photon Factory Storage Ring"(共著), Jpn. J. Appl. Phys., 36巻, 12A号, pp. 7415-7426, 19970000
  87. "Upgrade of the Photon Factory storage ring for a high brilliance configuration"(共著), Rev. Sci. Instrum., 66巻, 2 Pt 2号, pp. 1892-1894, 19950000
  88. "Characteristics of the Five-pole Superconducting Vertical Wiggler at the Photon Factory"(共著), Review of Scientific Instruments, 63巻, 1 Pt 2A号, pp. 301-304, 19920000
  89. "Improvement of beam lifetime by Optics Modification at the Photon Factory Storage Ring"(共著), Rev. Sci. Instrum., 63巻, 2号, pp. 1731-1735, 19920000
  90. "Global Orbit Feedback System at the Photon Factory Storage Ring"(共著), Particle Accelerators, 30巻, pp. 1795, 19900000
  91. "Effects of Insertion Devices on Beam Emittances at the Photon Factory Storage Ring"(共著), Particle Accelerators, 30巻, pp. 1807, 19900000
  92. "Correction of Tune Shifts and Distortions of Betatron Functions produced by the Insertion Devices at the Photon Factory Storage Ring"(共著), Particle Accelerators, 30巻, pp. 1813, 19900000
  93. "Measurement of Transverse Instability Thresholds in Low and High Emittance Optics at the Photon Factory Storage Ring"(共著), Particle Accelerators, 30巻, pp. 1783, 19900000
  94. "Ginga X-ray Observations of two gamma-ray burst error boxes"(共著), Astron. Astrophys., 227巻, pp. 451, 19900000
  95. "Positron Beams for the PF Storage Ring"(共著), Particle Accelerators, 30巻, pp. 385, 19900000
  96. "Dynamic Aperture of the Photon Factory Storage Ring"(共著), Particle Accelerators, 30巻, pp. 495, 19900000
  97. "Accumulation of Positrons into the Photon Factory Storage Ring"(共著), Particle Accelerators, 30巻, pp. 1777, 19900000
  98. "Beam Position Stabilization at the Photon Factory"(共著), Rev. Sci. Instrum., 60巻, 7 Pt.2A号, pp. 1507-1512, 19890000
  99. "Construction and Poeration of the Multipole Wiggler, MPW#16 at the Photon Factory"(共著), Rev. Sci. Instru., 60巻, 7 Pt.2A号, pp. 1855-1858, 19890000
  100. Observation of a Cosmic Gamma-ray Burst on Hakucho, AIP Conf. Proc., 115巻, pp. 390-392, 19840000
  101. Coherent control in the extreme ultraviolet and attosecond regime by synchrotron radiation, Nature Communications, 10巻, 4988号, 20191101
  102. Controlling the Orbital Alignment in Atoms Using Cross-Circularly Polarized Extreme Ultraviolet Wave Packets, Physical Review Letters, 123巻, pp. 233401-1-5, 201912
    DOIを用いた論文検索結果へのリンク

招待講演、口頭・ポスター発表等

  1. Optical vortex emitted from free electrons in nature, Masahiro Katoh, SPIE Conference 11099: Light in Nature VII, SPIE Optical Engineering + Applications, 2019年08月13日, 通常, 英語, SPIE, The international society for optics and photonics, San Diego convention center, San Diego, California United States

社会活動

委員会等委員歴

  1. シンクロトロン光研究センター招へい教員, 2021年04月, 2022年03月, 名古屋大学
  2. 加速器･共通基盤研究施設運営会議委員, 2021年04月, 2023年03月, 高エネルギー加速器研究機構
  3. 客員研究員, 2021年04月, 2022年03月, 高エネルギー加速器研究機構
  4. 客員研究員, 2020年04月, 2021年03月, 高エネルギー加速器研究機構
  5. 評議員, 2019年10月, 2021年09月, 日本放射光学会
  6. 加速器･共通基盤研究施設運営会議委員, 2019年04月, 2021年03月, 高エネルギー加速器研究機構
  7. 客員研究員, 2019年04月, 2020年03月, 高エネルギー加速器研究機構
  8. 共同利用・共同研究計画委員会委員, 2019年04月, 2021年03月, 京都大学エネルギー理工学研究所
  9. 評議員, 2016年00月00日, 2017年00月00日, 日本加速器学会
  10. 評議員, 2014年00月00日, 2015年00月00日, 日本加速器学会
  11. 評議員, 2014年00月00日, 2018年00月00日, 日本放射光学会
  12. 評議員, 2010年00月00日, 2012年00月00日, 日本放射光学会
  13. 評議員, 2008年00月00日, 2009年00月00日, 日本加速器学会
  14. 評議員, 2006年00月00日, 2009年00月00日, 日本放射光学会