Picosecond Dynamical Temporal Evolution Of Molecular Ir Absorption Spectra

H. S. Kwok; P. Mukherjee

doi:10.1117/12.966900

1 January 1987 Picosecond Dynamical Temporal Evolution Of Molecular Ir Absorption Spectra

H. S. Kwok, P. Mukherjee

Proceedings Volume 0742, Laser Applications to Chemical Dynamics; (1987) https://doi.org/10.1117/12.966900
Event: OE LASE'87 and EO Imaging Symposium, 1987, Los Angeles, CA, United States

Abstract

The variation of the collisionless absorption spectral shapes for vibrationally excited SF₆ and C₂F₅C1 as a function of the picosecond probe pulse duration was determined using a two-IR frequency pump-probe scheme. The experiments revealed a spectral narrowing with decreasing pulse duration, similar to a recent observation in C₃F₇I with a single laser pulse. The observed experimental results are shown to be consistent with a dynamic multi-tier classification of energy levels in the QC of polyatomic molecules. Specifically, the time constants for such a coupling are evaluated to be >20 ps for all the molecules studied.

Citation Download Citation

H. S. Kwok and P. Mukherjee "Picosecond Dynamical Temporal Evolution Of Molecular Ir Absorption Spectra", Proc. SPIE 0742, Laser Applications to Chemical Dynamics, (1 January 1987); https://doi.org/10.1117/12.966900

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