Characterization of Acoustic Sources by Optical Feedback Interferometry

Julien Perchoux 1 Fernando Urgiles 1 Thierry Bosch 1
1 LAAS-OSE - Équipe Optoélectronique pour les Systèmes Embarqués
LAAS - Laboratoire d'analyse et d'architecture des systèmes [Toulouse]
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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Eurosensors 2017, Sep 2017, Paris, France. Proceedings of eurosensors 2017, 1 (4), pp.348, 2017, 〈10.3390/proceedings1040348〉
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Julien Perchoux, Fernando Urgiles, Thierry Bosch. Characterization of Acoustic Sources by Optical Feedback Interferometry. Eurosensors 2017, Sep 2017, Paris, France. Proceedings of eurosensors 2017, 1 (4), pp.348, 2017, 〈10.3390/proceedings1040348〉. 〈hal-01611659〉

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