Demonstration of Pressure Wave Observation by Acousto-Optic Sensing Using a Self-Mixing Interferometer

In this paper, we demonstrate that a compact and inexpensive interferometric sensor based on the self-mixing effect in the laser cavity can be used for the characterization of shock waves. The sensor measures the changes in the refractive index induced by the shock wave. It is based on the self-mixi...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2023-04, Vol.23 (7), p.3720
Main Authors: Maqueda, Sébastien, Perchoux, Julien, Tronche, Clément, Imas González, José Javier, Genetier, Marc, Lavayssière, Maylis, Barbarin, Yohan
Format: Article
Language:English
Subjects:
acousto-optic sensor
Acousto-optics
Elastic waves
Feedback
Interferometry
laser sensor
Lasers
Optical instruments
Optics
Physical properties
Physics
Refractivity
self-mixing interferometer
Sensors
Shock waves
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Summary:In this paper, we demonstrate that a compact and inexpensive interferometric sensor based on the self-mixing effect in the laser cavity can be used for the characterization of shock waves. The sensor measures the changes in the refractive index induced by the shock wave. It is based on the self-mixing interferometry scheme. We describe the architecture of the dynamic sensor and the design of the experimental setup used for the characterization that involves a shock tube. Thus, we detail the experimental measurements for shock wave pressure amplitude of 5 bar and address their interpretation with regard to the most admitted models for acousto-optics.
ISSN:1424-8220
1424-8220
DOI:10.3390/s23073720