Generation of photons carrying orbital angular momentum by nonlinear inverse Compton scattering

• Project/Area Number: 18H03477
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 80040:Quantum beam science-related
• Research Institution: Institute for Molecular Science (2020); National Institute of Advanced Industrial Science and Technology (2018-2019)
• Principal Investigator: Taira Yoshitaka 分子科学研究所, 極端紫外光研究施設, 准教授 (60635803)
• Co-Investigator(Kenkyū-buntansha): 神門 正城 国立研究開発法人量子科学技術研究開発機構, 関西光科学研究所 光量子科学研究部, グループリーダー(定常) (50343942)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000); Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2019: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000); Fiscal Year 2018: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
• Keywords: 光渦 / ガンマ線渦 / 軌道角運動量 / トムソン散乱 / コンプトン散乱 / ガンマ線 / Ｘ線 / 非線形コンプトン散乱

Outline of Final Research Achievements

During this research period, we succeeded in detecting the helical wavefront of X-rays by diffraction from a triangular aperture for the first time in the world, and also demonstrated both theoretically and experimentally that it is possible to generate light with a phase structure in an elliptically polarized undulator. At the Kansai Photon Science Institute, we conducted experiments on the generation of gamma-ray vortices forming helical wavefronts by nonlinear inverse Compton scattering using an intense circularly polarized laser, but we were unable to measure the annular intensity distribution, which is a characteristic feature of gamma-ray vortices.

Academic Significance and Societal Importance of the Research Achievements

本研究では、ガンマ線渦の発生と計測手法確立のための研究開発を行ってきた。三角開口を用いたX線渦のらせん波面検出は、干渉法以外でらせん波面を検出できる最も簡便な方法である。楕円偏光アンジュレータを用いた光渦の発生方法は、位相構造を連続的に変化できる光を発生することが可能となり、円偏光レーザーを用いた非線形逆コンプトン散乱にも適用可能な技術である。

Research Products

• [Journal Article] Measurement of the phase structure of elliptically polarized undulator radiation (2020)
  • Author(s): Taira Yoshitaka、Fujimoto Masaki、Ri Shien、Hosaka Masahito、Katoh Masahiro
  • Journal Title: New Journal of Physics Volume: 22 Issue: 9 Pages: 093061-093061
  • DOI: 10.1088/1367-2630/abb54a
  • Peer Reviewed / Open Access
• [Journal Article] 楕円偏光アンジュレータ放射の位相構造 (2019)
  • Author(s): Y. Taira, M. Fujimoto, S. Ri, M. Hosaka, M. Katoh
  • Journal Title: Proceedings of the 16th Annual Meeting of Particle Accelerator Society of Japan Volume: - Pages: 166-169
  • Open Access
• [Journal Article] Measuring the topological charge of an x-ray vortex using a triangular aperture (2019)
  • Author(s): Taira Yoshitaka、Kohmura Yoshiki
  • Journal Title: Journal of Optics Volume: 21 Issue: 4 Pages: 045604-045604
  • DOI: 10.1088/2040-8986/ab0a51
  • Peer Reviewed
• [Journal Article] Generation of Optical Vortices by Nonlinear Inverse Thomson Scattering at Arbitrary Angle Interactions (2018)
  • Author(s): Taira Yoshitaka、Katoh Masahiro
  • Journal Title: The Astrophysical Journal Volume: 860 Issue: 1 Pages: 45-45
  • DOI: 10.3847/1538-4357/aac211
  • Peer Reviewed / Open Access
• [Journal Article] Gamma-ray vortices emitted from nonlinear inverse Thomson scattering of a two-wavelength laser beam (2018)
  • Author(s): Taira Yoshitaka、Katoh Masahiro
  • Journal Title: Physical Review A Volume: 98 Issue: 5 Pages: 052130-052130
  • DOI: 10.1103/physreva.98.052130
  • Peer Reviewed
• [Journal Article] 非線形逆トムソン散乱によるガンマ線渦の発生 (2018)
  • Author(s): Y. Taira, M. Katoh
  • Journal Title: Proceedings of the 15th Annual Meeting of Particle Accelerator Society of Japan Volume: - Pages: 70-73
  • Open Access
• [Presentation] アンジュレータを用いた光渦の発生 (2021)
  • Author(s): 平義隆
  • Organizer: 研究会「光の軌道角運動量の発生機構と物質相互作用の理解」
  • Invited
• [Presentation] 高強度円偏光レーザーを用いた非線形逆トムソン散乱によるガンマ線渦の発生2 (2021)
  • Author(s): 平義隆、神門正城、小瀧秀行、林由紀雄、中新信彦、黄開、大東出、川瀬啓悟、早川岳人
  • Organizer: 日本物理学会第76回年次大会
• [Presentation] Phase structure of elliptically polarized undulator radiation (2019)
  • Author(s): Y. Taira, M. Fujimoto, S. Ri, M. Hosaka, M. Katoh
  • Organizer: The 38th JSST Annual International Conference on Simulation Technology
  • Int'l Joint Research
• [Presentation] Gamma-ray vortices emitted from nonlinear inverse Thomson scattering of circularly polarized light (2019)
  • Author(s): Y. Taira, M. Katoh
  • Organizer: 5th International Conference on Optical Angular Momentum
  • Int'l Joint Research
• [Presentation] 楕円偏光アンジュレータ放射の位相構造 (2019)
  • Author(s): 平義隆、藤本將輝、李志遠、保坂将人、加藤政博
  • Organizer: 第16回日本加速器学会年会
• [Presentation] 軌道角運動量を運ぶガンマ線の生成 (2019)
  • Author(s): 平義隆
  • Organizer: 第25回HiSOR研究会
• [Presentation] 非線形逆トムソン散乱を用いたガンマ線渦の発生 (2019)
  • Author(s): 平義隆
  • Organizer: レーザー学会学術講演会第39回年次大会
  • Invited
• [Presentation] 円偏光レーザーによるガンマ線渦の発生 (2019)
  • Author(s): 平義隆、加藤政博
  • Organizer: 日本物理学会第74回年次大会
• [Presentation] Generation of gamma-ray vortices by nonlinear inverse Thomson scattering (2018)
  • Author(s): Y. Taira
  • Organizer: The 37th JSST Annual International Conference on Simulation Technology
  • Int'l Joint Research
• [Presentation] 非線形逆トムソン散乱によるガンマ線渦の発生 (2018)
  • Author(s): 平義隆、加藤政博
  • Organizer: 第15回日本加速器学会年会
• [Presentation] 非線形逆トムソン散乱を用いた軌道角運動量を運ぶガンマ線の発生 (2018)
  • Author(s): 平義隆
  • Organizer: ビーム物理研究会2018
• [Presentation] 円偏光高強度レーザーを用いた軌道角運動量を運ぶガンマ線渦の発生 (2018)
  • Author(s): 平義隆
  • Organizer: 研究会「光・物質・生命・宇宙におけるキラリティ」
• [Remarks]
  • URL: https://staff.aist.go.jp/yoshitaka-taira/index.html