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5 March 2021 Studying the impact of roughness on the sensitivity of Fabry-Pérot sensors for photoacoustic imaging
Dylan Marques, James A. Guggenheim, Edward Z. Zhang, Paul C. Beard, David Martin-Sanchez, Peter R. T. Munro
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Proceedings Volume 11642, Photons Plus Ultrasound: Imaging and Sensing 2021; 1164222 (2021) https://doi.org/10.1117/12.2582081
Event: SPIE BiOS, 2021, Online Only
Abstract
Fabry-Pérot (FP) polymer film sensors are used as ultrasound sensors for Photoacoustic (PA) imaging. Optical models predict that FP sensors should have higher sensitivity than observed experimentally. The models assume FP sensors to be optically flat whereas in practice the polymer film spacer exhibits a degree of surface roughness. To understand the impact of the roughness, an optical model of rough FP sensors was developed. Theoretical results show that roughness can reduce the optical sensitivity by a factor of two. The model will help to guide the design of FP sensors to optimize their sensitivity and, therefore, the imaging depth.
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Dylan Marques, James A. Guggenheim, Edward Z. Zhang, Paul C. Beard, David Martin-Sanchez, and Peter R. T. Munro "Studying the impact of roughness on the sensitivity of Fabry-Pérot sensors for photoacoustic imaging", Proc. SPIE 11642, Photons Plus Ultrasound: Imaging and Sensing 2021, 1164222 (5 March 2021); https://doi.org/10.1117/12.2582081
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KEYWORDS
Sensors
Image sensors
Photoacoustic imaging
Tissue optics
Polymers
Image resolution
Photoacoustic spectroscopy
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