Two-photon resonant excitation of a doubly excited state in He atoms by high-harmonic pulses

Sekikawa, Taro; Okamoto, Tatsuya; Haraguchi, Eisuke et al.

Optics Express, 2008, 16(26), 21922-21929

Permalink : https://hdl.handle.net/2115/45304

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アクセス権	open access
URI	https://hdl.handle.net/2115/45304
タイトル	Two-photon resonant excitation of a doubly excited state in He atoms by high-harmonic pulses
著者	Sekikawa, Taro ; Okamoto, Tatsuya ; Haraguchi, Eisuke ; Yamashita, Mikio ; Nakajima, Takashi
e-Rad_Researcher 90282607 著者名 Sekikawa, Taro
著者名 Okamoto, Tatsuya
著者名 Haraguchi, Eisuke
e-Rad_Researcher 10240631 著者名 Yamashita, Mikio
著者名 Nakajima, Takashi
言語	英語
発行日	2008-12-22
出版者	Optical Society of America
収録物名	Optics Express
巻(号)	16(26)
ページ	21922-21929
抄録	We experimentally demonstrate a two-color two-photon resonant excitation of the doubly excited 2p2 1S state in helium atoms by the combination of 19th and 21st harmonic photons of a Ti:sapphire laser. Production of the 2p2 1S state is confirmed by the experimental observation that the electron emission from this state does not depend on the direction of harmonic polarization. Our ab-initio theoretical results through the solution of time-dependent Schrödinger equation are consistent with the experimental results and confirm the first successful production of a doubly excited state by high-harmonic pulses.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	©2008 Optical Society of America
EISSN	1094-4087
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1364/OE.16.021922