Direct observation of super-excited states in methane created by a femtosecond intense laser field

被引：26

作者：

Azarm, A. ^{[1
,2
]}

Xu, H. L. ^{[1
,2
]}

Kamali, Y. ^{[1
,2
]}

Bernhardt, J. ^{[1
,2
]}

Song, D. ^{[3
]}

Xia, A. ^{[3
]}

Teranishi, Y. ^{[4
,5
]}

Lin, S. H. ^{[4
,5
]}

Kong, F. ^{[3
]}

Chin, S. L. ^{[1
,2
]}

机构：

[1] Univ Laval, Ctr Opt Photon & Laser, Quebec City, PQ G1V 0A6, Canada

[2] Univ Laval, Dept Phys Engn Phys & Opt, Quebec City, PQ G1V 0A6, Canada

[3] Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China

[4] Acad Sinica, Inst Atom & Mol Sci, Taipei, Taiwan

[5] Natl Chiao Tung Univ, Inst Appl Chem, Inst Mol Sci, Hsinchu 30050, Taiwan

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2008年 / 41卷 / 22期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1088/0953-4075/41/22/225601

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report, for the first time, a direct observation of the super-excited states of CH4 in femtosecond intense laser fields using a pump (800 nm)-probe (1338 nm) technique. An unambiguous depletion of the CH (A (2) Delta -> X (2)Pi) fluorescence signal as a function of the delay time is attributed to the de-excitation of the super-excited states by the probe laser pulse. The lifetime of the super-excited state is measured to be about 160 fs.

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页数：4

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