PHOTOACOUSTIC DETECTION OF TRACE GASES WITH AN OPTICAL MICROPHONE

Citation
J. Breguet et al., PHOTOACOUSTIC DETECTION OF TRACE GASES WITH AN OPTICAL MICROPHONE, Sensors and actuators. A, Physical, 48(1), 1995, pp. 29-35
Citations number
13
Categorie Soggetti
Engineering, Eletrical & Electronic","Instument & Instrumentation
ISSN journal
09244247
Volume
48
Issue
1
Year of publication
1995
Pages
29 - 35
Database
ISI
SICI code
0924-4247(1995)48:1<29:PDOTGW>2.0.ZU;2-2
Abstract
An alternative to the electrical microphone for photoacoustic detectio n of trace gases is presented. This new microphone is made of standard monomode optical fibers wound and glued on a thin plate and is one of the arms of a Michelson interferometer. A detection scheme with a Sag nac interferometer has also been used and has given better results. Th ree cells working with different resonance modes and different microph one configurations have been tested.