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Proceedings Paper

Photoacoustic signal detection using interferometric fiber-optic ultrasound transducers
Author(s): Amanda D. Salas-Caridad; Geminiano Martínez-Ponce; Rodolfo Martínez-Manuel
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Paper Abstract

The cross-section of a metallic sample was photoacoustically imaged using a pulsed nanosecond laser as the excitation source and a fiber-optic hydrophone system to acquire the pressure signal. The ultrasound sensor was an extrinsic Fabry-P´erot fiber-optic interferometer and the band-limited photodetected output signal was recorded in a digital oscilloscope. In order to reconstruct the image, a time set of ultrasound signals acquired in a circular scan around the sample were used to solve the time-reversal equations. It was observed that image contrast can be enhanced considering the deconvolution of the sensor frequency response from each measured pressure signal.

Paper Details

Date Published: 30 August 2017
PDF: 8 pages
Proc. SPIE 10404, Infrared Sensors, Devices, and Applications VII, 104040B (30 August 2017); doi: 10.1117/12.2274569
Show Author Affiliations
Amanda D. Salas-Caridad, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
Geminiano Martínez-Ponce, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
Rodolfo Martínez-Manuel, Ctr. de Investigaciones en Óptica, A.C. (Mexico)

Published in SPIE Proceedings Vol. 10404:
Infrared Sensors, Devices, and Applications VII
Paul D. LeVan; Ashok K. Sood; Priyalal Wijewarnasuriya; Arvind I. D'Souza, Editor(s)

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