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碘分子在皮秒激光诱导取向中的复苏结构的实验观察

Experimental observation of revival structures in picosecond laser-induced alignment of I2.

作者信息

Rosca-Pruna F, Vrakking M J

机构信息

FOM Institute for Atomic and Molecular Physics (AMOLF), Kruislaan 407, 1098 SJ Amsterdam, The Netherlands.

出版信息

Phys Rev Lett. 2001 Oct 8;87(15):153902. doi: 10.1103/PhysRevLett.87.153902. Epub 2001 Sep 20.

DOI:10.1103/PhysRevLett.87.153902
PMID:11580701
Abstract

We report the experimental observation of revival structures in the alignment of a ground-state rotational wave packet following nonresonant excitation of I2 molecules by an intense picosecond laser pulse. The revivals appear at characteristic time delays following the excitation by the pump laser pulse, and show a significant narrowing of the angular distribution during a few picoseconds. The interaction with the pump laser also leads to a steady-state alignment of the molecule, due to rotational pumping.

摘要

我们报道了在强皮秒激光脉冲对I2分子进行非共振激发后，基态转动波包取向中复兴结构的实验观测结果。复兴出现在泵浦激光脉冲激发后的特定时间延迟处，并且在几皮秒内显示出角分布的显著变窄。由于转动抽运，与泵浦激光的相互作用还导致分子的稳态取向。

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