Journal
APPLIED SPECTROSCOPY
Volume 57, Issue 9, Pages 1087-1092Publisher
SAGE PUBLICATIONS INC
DOI: 10.1366/00037020360695946
Keywords
photoacoustie spectroscopy; optimization; microphone; nonresonant; photoacoustic FT-IR spectroscopy
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The principles of optimizing a microphone for a photoacoustic detector in the nonresonant mode of operation are presented. Performance of the constructed optical cantilever microphone is compared to the commercial electret microphone by measuring the photoacoustic spectrum of methane with both systems. The sensitivity of the presented photoacoustic detector in the nonresonant mode of operation is 100 times higher with the optical cantilever microphone than with the electret microphone.
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