Document Type

Article

Publication Version

Published Version

Publication Date

2012

Journal or Book Title

Journal of Chemical Physics

Volume

136

Issue

11

First Page

111101-1

Last Page

111101-4

DOI

10.1063/1.3693669

Abstract

A narrowband, time-asymmetric probe pulse is introduced into the hybrid femtosecond/picosecond rotational coherent anti-Stokes Raman scattering (fs/ps RCARS) technique to provide accurate and precise single-shot, high-repetition-rate gas-phase thermometric measurements. This narrowband pulse-generated by inserting a Fabry-Pérot étalon into the probe-pulse beam path-enables frequency-domain detection of pure-rotational transitions. The unique time-asymmetric nature of this pulse, in turn, allows for detection of resonant Raman-active rotational transitions free of signal contamination by nonresonant four-wave-mixing processes while still allowing detection at short probe-pulse delays, where collisional dephasing processes are negligible. We demonstrate that this approach provides excellent single-shot thermometric accuracy (1 error) and precision (∼2.5) in gas-phase environments.

Comments

The following article appeared in Journal of Chemical Physics 136, 111101 (2012); and may be found at doi: 10.1063/1.3693669.

Rights

Copyright 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Copyright Owner

AIP Publishing LLC

Language

en

File Format

application/pdf

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