Abstract

The design and certain basic characteristics of a new type of optoacoustic device (cell) are described. Initial experimental data using a CO₂ laser operating in the 9–10-μm wavelength region demonstrated sufficient sensitivity to measure the absorption due to SF₆ in the air at a concentration of one part in 10¹¹. Acoustic Q's were demonstrated in excess of 1800. The general expression for the optoacoustic pressure variations inside the acoustical resonant cavity is given.

© 1978 Optical Society of America

Resonant optoacoustic cells for trace gas analysis*

E. Kritchman, S. Shtrikman, and M. Slatkine
J. Opt. Soc. Am. 68(9) 1257-1271 (1978)

Optimal optoacoustic detector design

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Appl. Opt. 14(8) 1960-1976 (1975)

Laser schlieren microphone for optoacoustic spectroscopy

J. G. Choi and G. J. Diebold
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Laser optoacoustic absorption spectra for various explosive vapors

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Appl. Opt. 17(13) 2097-2102 (1978)

Pulsed laser optoacoustic detection of flame species

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