Underlying physics of high-order harmonic generation from oriented molecules
| Project/Area Number |
26247065
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Atomic/Molecular/Quantum electronics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Sakai Hirofumi 東京大学, 大学院理学系研究科(理学部), 教授 (20322034)
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| Co-Investigator(Renkei-kenkyūsha) |
MINEMOTO Shinichirou 東京大学, 大学院理学系研究科, 助教 (90323493)
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| Research Collaborator |
KATO Kosaku
SAKEMI Yusuke
MUN Je Hoi
TAKEI Daisuke
NAKAGAWA Kei
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥42,640,000 (Direct Cost: ¥32,800,000、Indirect Cost: ¥9,840,000)
Fiscal Year 2016: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2015: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
Fiscal Year 2014: ¥26,650,000 (Direct Cost: ¥20,500,000、Indirect Cost: ¥6,150,000)
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| Keywords | 原子・分子物理 / 気体分子の配列・配向制御 / 高次高調波発生 / 超閾イオン化 / 分子軌道イメージング / プラズマシャッター / 分子偏向器 / 六極集束器 |
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| Outline of Final Research Achievements |
With an intense femtosecond two-color pulse optimized for the generation of even-order harmonics from CO molecules, we directly measure the actual degrees of orientation by utilizing the Coulomb explosion imaging technique with appropriate probe polarization. We find that the macroscopic orientation of CO molecules is negligible even when significant even-order harmonics are observed. This finding shows that the generation of even-order harmonics cannot be ascribed to the macroscopic orientation of CO molecules. The rotational wave packet of CO molecules created with an intense femtosecond two-color pulse is thought to be in an uninvestigated quantum state, which is beyond the Born-Oppenheimer approximation, without inversion symmetry at any of the three steps of high-order harmonic generation, leading to the generation of even-order harmonics.
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Report
(4 results)
Research Products
(42 results)
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[Presentation] Nonadiabatic orientation with a femtosecond two-color laser field studied by high-order harmonic generation and ion imaging spectrometry2016
Author(s)
Shinichirou Minemoto, Koji Umemoto, Tatsuya Sumiya, Ryota Katsumi, Wataru Komatsubara, Siobhan Tobin, Hsu Liu, and Hirofumi Sakai
Organizer
International Conference on Ultrafast Phenomena
Place of Presentation
Santa Fe Community Convention Center, Santa Fe, New Mexico, USA
Year and Date
2016-07-17
Related Report
Int'l Joint Research
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[Presentation] Femtosecond structure determination of aligned molecules in an intense laser field studied by X-ray photoelectron diffraction with an XFEL2016
Author(s)
S. Minemoto, T. Teramoto, H. Akagi, T. Fujikawa, T. Majima, K. Nakajima, K. Ogawa, H. Sakai, T. Togashi, K. Tono, S. Tsuru, S. Yoshida, K. Wada, M. Yabashi, and A. Yagishita
Organizer
39th International Conference on Vacuum Ultraviolet and X-ray Physics
Place of Presentation
Zurich (Switzerland)
Year and Date
2016-07-05
Related Report
Int'l Joint Research
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[Presentation] Femtosecond structure determination of molecules in an alignment laser by photoelectron diffraction with an XFEL2016
Author(s)
S. Minemoto, T. Teramoto, H. Akagi, T. Fujikawa, T. Majima, K. Nakajima, K. Ogawa, H. Sakai, T. Togashi, K. Tono, S. Tsuru, S. Yoshida, K. Wada, M. Yabashi, and A. Yagishita
Organizer
The 16th International Conference on X-Ray Lasers
Place of Presentation
Nara (Japan)
Year and Date
2016-05-24
Related Report
Int'l Joint Research
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[Presentation] Ultrafast structure determination of a molecule in an intense laser field by photoelectron diffraction imaging using XFEL2015
Author(s)
S. Minemoto, T. Teramoto, H. Akagi, T. Fujikawa, T. Majima, K. Nakajima, K. Ogawa, H. Sakai, T. Togashi, K. Tono, S. Tsuru, S. Yoshida, K. Wada, M. Yabashi, and A. Yagishita
Organizer
International Conference on Electron Spectroscopy and Structure: ICESS2015
Place of Presentation
Stony Brook University, New York, USA
Year and Date
2015-09-28
Related Report
Int'l Joint Research
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[Presentation] Photoelectron diffraction from laser-aligned molecules using an x-ray free-electron laser2015
Author(s)
K. Nakajima, T. Teramoto, H. Akagi, T. Fujikawa, T. Majima, S. Minemoto, K. Ogawa, H. Sakai, T. Togashi, K. Tono, S. Tsuru, K. Wada. M. Yabashi, and A. Yagishita
Organizer
ICPEAC satellites, International Symposium on (e,2e), Double Photo-ionization and Related Topics/The 18th International Symposium on Polarization and Correlation in Electronic and Atomic Collisions
Place of Presentation
San Sebastian, Spain
Year and Date
2015-07-30
Related Report
Int'l Joint Research / Invited
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[Presentation] Ｘ線自由電子レーザーによる配列分子の光電子回折2015
Author(s)
中嶋享、寺本高啓、赤木浩、藤川高志、間嶋拓也、峰本紳一郎、小川奏、酒井広文、富樫格、登野健介、水流翔太、和田健、矢橋牧名、柳下明
Organizer
第28回日本放射光学会年会放射光科学合同シンポジウム
Place of Presentation
立命館大学びわこ・くさつキャンパス（滋賀県草津市）
Year and Date
2015-01-11
Related Report
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