Origin of negative and dispersive features in anti-Stokes and resonance femtosecond stimulated Raman spectroscopy

被引：78

作者：

Frontiera, Renee R. ^{[1
]}

Shim, Sangdeok ^{[1
]}

Mathies, Richard A. ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 2008年 / 129卷 / 06期

关键词：

D O I：

10.1063/1.2966361

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Femtosecond stimulated Raman spectroscopy is extended to probe ground state anti-Stokes vibrational features. Off resonance, negative anti-Stokes features are seen that are the mirror image of the positive Stokes side spectra. On resonance, the observed dispersive lineshapes are dramatically dependent on the frequencies of the picosecond pump and femtosecond probe pulses used to generate the stimulated Raman spectra. These observations are explained by the contributions of the inverse Raman and hot luminescence four-wave mixing processes discussed by Sun [J. Chem. Phys. 128, 144114 (2008)], which contribute to the overall femtosecond stimulated Raman signal.

引用

页数：6

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