论文信息 - Optimization of a Microphone for Photoacoustic Spectroscopy

Optimization of a Microphone for Photoacoustic Spectroscopy

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.

Jyrki Kauppinen | J. Kauppinen | K. Wilcken | Klaus Wilcken

[1] Richard M. White,et al. Piezoelectric cantilever acoustic transducer , 1998 .

[2] Nicolas Ledermann,et al. Piezoelectric cantilever microphone for photoacoustic gas detector , 2001 .

[3] A. Miklós,et al. Application of acoustic resonators in photoacoustic trace gas analysis and metrology , 2001 .

[4] Ute Rabe,et al. Vibrations of free and surface‐coupled atomic force microscope cantilevers: Theory and experiment , 1996 .

[5] M. H. de Paula,et al. Optical microphone for photoacoustic spectroscopy , 1988 .

[6] P. Griffiths,et al. Photoacoustics and Photoacoustic Spectroscopy , 1981 .

[7] Ari Olafsson,et al. FTIR photoacoustic trace gas detection , 1999 .

[8] L. Kreuzer,et al. 1 – The Physics of Signal Generation and Detection , 1977 .