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Characterization of Acoustic Sources by Optical Feedback Interferometry

Abstract : Sound can be described as the propagation of pressure variations in compressible media that involves compression and expansion and induces a change in the density of the medium. This change in acoustic pressure as it induces a change of the refractive index can be measured by optical methods, the most recent being the optical feedback interferometry. With this technique, a laser diode is beaming on a reflective surface thus creating a cavity where the acoustic wave propagates. This paper presents anovel experimental technique to measure radiation pattern of acoustic sources based on optical feedback interferometry in a laser diode.
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Contributor : Julien Perchoux <>
Submitted on : Tuesday, January 16, 2018 - 10:22:55 AM
Last modification on : Thursday, June 10, 2021 - 3:01:28 AM
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Julien Perchoux, Patricio Fernando Urgiles Ortiz, Thierry Bosch. Characterization of Acoustic Sources by Optical Feedback Interferometry. Eurosensors 2017, Sep 2017, Paris, France. pp.348, ⟨10.3390/proceedings1040348⟩. ⟨hal-01611659⟩



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