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Proceedings Paper

Photoacoustic sensing with micro-tuning forks
Author(s): U. Willer; M. Köhring; M. Mordmüller; W. Schade
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Paper Abstract

Different modifications of quartz enhanced photoacoustic spectroscopy (QEPAS) are discussed. An analysis of the signal-to-noise ratio for the generated photoacoustic signal gives hints for an optimized geometry of tuning fork and acoustic resonator. Furthermore, simultaneous or alternate photoacoustic and electrical driving is discussed, leading the way to new detection schemes that are capable of measuring changes in molecular relaxation dynamics.

Paper Details

Date Published: 3 June 2015
PDF: 12 pages
Proc. SPIE 9482, Next-Generation Spectroscopic Technologies VIII, 94820B (3 June 2015); doi: 10.1117/12.2182583
Show Author Affiliations
U. Willer, Clausthal Univ. of Technology (Germany)
M. Köhring, Fraunhofer Heinrich Hertz Institute (Germany)
M. Mordmüller, Clausthal Univ. of Technology (Germany)
W. Schade, Clausthal Univ. of Technology (Germany)
Fraunhofer Heinrich Hertz Institute (Germany)

Published in SPIE Proceedings Vol. 9482:
Next-Generation Spectroscopic Technologies VIII
Mark A. Druy; Richard A. Crocombe; David P. Bannon, Editor(s)

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