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Infrared degenerate four wave mixing spectroscopy of jet-cooled C2H2

โœ Scribed by Y. Tang; S.A. Reid

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
425 KB
Volume
248
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

We report the application of infrared degenerate four-wave mixing (IR DFWM) spectroscopy to probe rotational-vibrational transitions in the v3/v 2 + ~' 4 + v5 Fermi dyad region of jet-cooled C2H 2. The spectral intensities show a quadratic population dependence, and are well reproduced by a Boltzmann distribution of J state populations at Tro t = 25 K. Intensity dependence measurements and lineshape analysis show a cubic dependence of the DFWM signal on laser intensity, as expected from theory in the weak field limit (I <</sat)" We compare DFWM signals in jet versus bulk experiments.

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