2005 Fiscal Year Final Research Report Summary
Control of Molecules in Intense Laser Fields
| Project/Area Number |
14077101
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
YAMANOUCHI Kaoru The University of Tokyo, Department of Chemistry, School of Science, Professor, 大学院理学系研究科, 教授 (40182597)
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| Co-Investigator(Kenkyū-buntansha) |
NAKASHIMA Nobuaki Osaka City University, Graduate School of Science, Professor, 大学院理学研究科, 教授 (00106163)
KONO Hirohiko Tohoku University, Graduate School of Science, Professor, 大学院理学研究科, 教授 (70178226)
IKEDA Kensuke Ritsumeikan University, Faculty of Science and Engineering, Professor, 理工学部, 教授 (40151287)
MIDORIKAWA Katsumi The Institute of Physical and Chemical Research (RIKEN), Laser Technology Laboratory, Chief Scientist, レーザー物理工学研究室, 主任研究員 (40166070)
NAKAMURA Kazutaka Tokyo Institute of Technology, Materials and Structures Laboratory, Associate Professor, 応用セラミックス研究所, 助教授 (20302979)
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| Project Period (FY) |
2002 – 2006
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| Keywords | intense laser field / control of chemical reaction / molecular science / non-linear dynamics / laser engineering |
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| Research Abstract |
In our Priority Area Program on Control of Molecules in Intense Laser Fields, trans-disciplinary as well as interdisciplinary research exchanges and cooperation have intensively been done among the member researchers in order to answer a fundamental question, "Can we control molecular processes and chemical reactions by light?" and to establish methodologies of chemical reaction control in intense light fields. The followings are the research highlights. In Theme 1, "Observation of novel phenomena of molecules, clusters, in condensed matters in intense laser fields," efficient ejection of triatomic hydrogen molecular ions, He, and ultrafast hydrogen atom migration were discovered when hydrocarbon molecules were exposed to ultrashort intense laser fields. In Theme 2, "Establishment theories on dynamics of molecules in intense laser fields and the development of their methodologies," a new theoretical method called "Time-dependent adiabatic state approximation" was developed, and was app
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lied to understand mechanisms of chemical reaction control in intense laser fields. In Theme 3, "Chemical reaction control in intense laser fields by designing optimized laser field," advanced laser sources as well as laser pulse shaping techniques developed in Theme 4 were applied for controlling selective breaking of chemical bonds. In Theme 4, "Generation of ultrashort-pulsed X rays and high-order harmonics and establishment of laser pulse shaping techniques," intense and ultrashort X ray pulses were generated by laser induced plasmas. Significant development was made in methodologies of intensifying high-order harmonics, and light pulses in the attosecond time domain were generated and a auto-correlation technique for measuring the temporal pulse width of attosecond pulses were developed. Furthermore, the Core Members of our Priority Area Program took leadership in establishing a new society, "Japan Light Field Science Society (JILS)," in 2003, for promoting research exchanges among researchers in academic and industrial circles, as well as for activating international research exchanges and researcher exchanges. Thanks to the activities of our Priority Area Program and those of JILS, the newly emerging interdisciplinary research field called "Ultrafast Intense Laser Science" has started to spread from Japan to the rest of the world. Less
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Research Products
(28 results)
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[Patent(Industrial Property Rights)] コヒーレント光結合 装置2004
Inventor(s)
児玉了祐, 宮永憲明, 實野孝久, 白神宏之, 椿本孝治, 田中和夫, 近藤公伯, 平野嘉仁, 鈴木二郎, 三神泉, 江崎豊, 堀内弥, 田畑真毅, 木原昌彦, 苗村康次
Industrial Property Rights Holder
三菱電機株式会社
Industrial Property Number
特許, 特願 2004-105003
Filing Date
2004-05-31
Description
「研究成果報告書概要(和文)」より
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