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Proceedings Paper

Optical feedback interferometry applied to visualize an acoustic stationary wave
Author(s): Fernando Urgiles; Julien Perchoux; Francis Jayat; Clement Tronche; Thierry Bosch
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Paper Abstract

This article presents a novel technique to acquire and visualize two-dimensional images of dynamic changes of acoustic pressure in the case of a stationary acoustic wave. This method uses optical feedback interferometry sensing with a near-infrared laser diode. The stationary acoustic wave is generated using two piezoelectric transducers of 40 kHz facing each other, dynamic changes in acoustic pressure are measured in a 100 mm x 100 mm acoustic propagation field whose refractive index is variable along the optical path of the laser from the laser diode to a distant mirror and vice-versa. The image system records an image of 100 x 100 pixels of the acoustic pressure variation.

Paper Details

Date Published: 24 May 2018
PDF: 7 pages
Proc. SPIE 10679, Optics, Photonics, and Digital Technologies for Imaging Applications V, 1067911 (24 May 2018); doi: 10.1117/12.2315718
Show Author Affiliations
Fernando Urgiles, Lab. d'Analyse et d'Architecture des Systèmes, Univ. de Toulouse, CNRS (France)
Univ. Politecnica Salesiana Cuenca (Ecuador)
Julien Perchoux, Lab. d'Analyse et d'Architecture des Systèmes, Univ. de Toulouse, CNRS (France)
Francis Jayat, Lab. d'Analyse et d'Architecture des Systèmes, Univ. de Toulouse, CNRS (France)
Clement Tronche, Lab. d'Analyse et d'Architecture des Systèmes, Univ. de Toulouse, CNRS (France)
Thierry Bosch, Lab. d'Analyse et d'Architecture des Systèmes, Univ. de Toulouse, CNRS (France)


Published in SPIE Proceedings Vol. 10679:
Optics, Photonics, and Digital Technologies for Imaging Applications V
Peter Schelkens; Touradj Ebrahimi; Gabriel Cristóbal, Editor(s)

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