Acoustic amplifier for detection of atmospheric pollutants

Kreuzer has demonstrated the feasibility of detecting atmospheric pollutants using acoustic signals produced by volumetric absorption of infrared radiation. We have investigated a substantial improvement of this technique wherein the optical excitation beam is modulated at a frequency corresponding...

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Bibliographic Details
Published in:Applied physics letters 1973-12, Vol.23 (11), p.633-635
Main Authors: Dewey, C. F., Kamm, R. D., Hackett, C. E.
Format: Article
Language:English
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Summary:Kreuzer has demonstrated the feasibility of detecting atmospheric pollutants using acoustic signals produced by volumetric absorption of infrared radiation. We have investigated a substantial improvement of this technique wherein the optical excitation beam is modulated at a frequency corresponding to a natural acoustic resonance of the sample chamber. Acoustic amplification factors exceeding 100 have been observed.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1654774