Optical fiber sensor for the detection of laser-generated ultrasound in arterial tissues

Paul C. Beard; Timothy N. Mills

doi:10.1117/12.201235

10 February 1995 Optical fiber sensor for the detection of laser-generated ultrasound in arterial tissues

Paul C. Beard, Timothy N. Mills

Proceedings Volume 2331, Medical Sensors II and Fiber Optic Sensors; (1995) https://doi.org/10.1117/12.201235
Event: International Symposium on Biomedical Optics Europe '94, 1994, Lille, France

Abstract

Theoretical and experimental aspects of an extrinsic Fabry-Perot optical fiber ultrasound sensor for use in a photoacoustic-guided laser angioplasty system are described. The sensor has been characterized using laser generated thermoelastic waves as a source of wideband ultrasound. A system sensitivity of 25 mV/MPa and an acoustic noise floor of 2 Pa/Hz^1/2 are reported using a transparent polymer film as the sensing element. The system demonstrates the required bandwidth for sensing thermoelastic waves containing frequency components up to 20 MHz.

Citation Download Citation

Paul C. Beard and Timothy N. Mills "Optical fiber sensor for the detection of laser-generated ultrasound in arterial tissues", Proc. SPIE 2331, Medical Sensors II and Fiber Optic Sensors, (10 February 1995); https://doi.org/10.1117/12.201235

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