Photoacoustic signal detection using interferometric fiber-optic ultrasound transducers

Amanda D. Salas-Caridad; Geminiano Martínez-Ponce; Rodolfo Martínez-Manuel

doi:10.1117/12.2274569

30 August 2017 Photoacoustic signal detection using interferometric fiber-optic ultrasound transducers

Amanda D. Salas-Caridad, Geminiano Martínez-Ponce, Rodolfo Martínez-Manuel

Proceedings Volume 10404, Infrared Sensors, Devices, and Applications VII; 104040B (2017) https://doi.org/10.1117/12.2274569
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

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.

Conference Presentation

Citation Download Citation

Amanda D. Salas-Caridad, Geminiano Martínez-Ponce, and Rodolfo Martínez-Manuel "Photoacoustic signal detection using interferometric fiber-optic ultrasound transducers", Proc. SPIE 10404, Infrared Sensors, Devices, and Applications VII, 104040B (30 August 2017); https://doi.org/10.1117/12.2274569

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