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

A. Azarm; H. L. Xu; Y. Kamali; J. Bernhardt; D. Song; A. Xia; Teranishi Yoshiaki; S. H. Lin; F. Kong; S. L. Chin

doi:10.1088/0953-4075/41/22/225601

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

A. Azarm, H. L. Xu, Y. Kamali, J. Bernhardt, D. Song, A. Xia, Teranishi Yoshiaki, S. H. Lin, F. Kong, S. L. Chin

物理研究所

研究成果: Article › 同行評審

32 引文斯高帕斯（Scopus）

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 ²Δ → X²Π) 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.

原文	English
文章編號	225601
期刊	Journal of Physics B: Atomic, Molecular and Optical Physics
卷	41
發行號	22
DOIs	https://doi.org/10.1088/0953-4075/41/22/225601
出版狀態	Published - 1 12月 2008

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10.1088/0953-4075/41/22/225601

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AU - Azarm, A.

AU - Xu, H. L.

AU - Kamali, Y.

AU - Bernhardt, J.

AU - Song, D.

AU - Xia, A.

AU - Yoshiaki, Teranishi

AU - Lin, S. H.

AU - Kong, F.

AU - Chin, S. L.

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N2 - 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 2Δ → X2Π) 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.

AB - 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 2Δ → X2Π) 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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VL - 41

JO - Journal of Physics B: Atomic, Molecular and Optical Physics

JF - Journal of Physics B: Atomic, Molecular and Optical Physics

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

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