Quartz-enhanced photoacoustic spectroscopy

A new approach to detecting a weak photoacoustic signal in a gas medium is described. Instead of a gas-filled resonant acoustic cavity, the sound energy is accumulated in a high- Q crystal element. Feasibility experiments utilizing a quartz-watch tuning fork demonstrate a sensitivity of 1.2x10(-7) c...

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Bibliographic Details
Published in:Optics letters 2002-11, Vol.27 (21), p.1902-1904
Main Authors: Kosterev, A A, Bakhirkin, Yu A, Curl, R F, Tittel, F K
Format: Article
Language:English
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Summary:A new approach to detecting a weak photoacoustic signal in a gas medium is described. Instead of a gas-filled resonant acoustic cavity, the sound energy is accumulated in a high- Q crystal element. Feasibility experiments utilizing a quartz-watch tuning fork demonstrate a sensitivity of 1.2x10(-7) cm(-1) W/ radicalHz . Potential further developments and applications of this technique are discussed.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.27.001902