A NOVEL SOURCE FOR INFRARED KINETIC SPECTROSCOPY

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1993

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Ohio State University

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We present the first transient free radical spectra recorded with a recently $developed^{1}$ difference frequency generation spectrometer based on $AgGaS^{2}$. By combining the outputs from two continuous wave, single frequency visible lasers (dye, Ti:Sapphire, and/or diode), continuously tunable infrared light has been produced at power levels of tens of microwatts between 1000 and $210 cm^{-1}$. An absolute frequency precision of $6 \times 10^{-3} cm^{-1}$ and a laser linewidth of -1.0 MHz has been achieved. This infrared source is expected to be a valuable new spectroscopic tool with sub-Doppler resolution continuously spanning a large portion of the molecular fingerprint region.

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$^{1.}$ A. H. Hielscher, C. E. Miller, D. C. Bayard, U. Simon, K. P. Smolka, R. F. Curl, and F. K. Tittel, J. Opt. Soc. Am. B. 9, 1962 (1992).
Author Institution: Department of Chemistry and Rice Quantum Institute, Rice University

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http://hdl.handle.net/1811/18503

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Abstracts of OSU International Symposium on Molecular Spectroscopy 1990-1999