Fabry-Perot sensors with homogeneous spacer thickness for parallelized detection using a camera-based tomograph

Jan Sievers; Werner Lebek; Claus Villringer; Jan Laufer

doi:10.1117/12.2649123

9 March 2023 Fabry-Perot sensors with homogeneous spacer thickness for parallelized detection using a camera-based tomograph

Jan Sievers, Werner Lebek, Claus Villringer, Jan Laufer

Author Affiliations +

Proceedings Volume PC12379, Photons Plus Ultrasound: Imaging and Sensing 2023; PC123791R (2023) https://doi.org/10.1117/12.2649123
Event: SPIE BiOS, 2023, San Francisco, California, United States

Abstract

Fabry-Perot tomographs have captured some of the most compelling photoacoustic images as they combine small element sizes with high acoustic sensitivity and a broad frequency response. A major fabrication challenge is the homogenization across large sensor areas. In this study, a spin coated photopolymer is used as spacer material. Its thickness can be modified spatially using UV light source leading to homogenization over areas of 2 x 2 cm2. The optical transfer function, acoustic sensitivity, and frequency response were measured using a camera-based tomograph. The imaging capabilities were demonstrated by capturing acoustic fields emitted by a transducer and PA phantoms.

Conference Presentation

Citation Download Citation

Jan Sievers, Werner Lebek, Claus Villringer, and Jan Laufer "Fabry-Perot sensors with homogeneous spacer thickness for parallelized detection using a camera-based tomograph", Proc. SPIE PC12379, Photons Plus Ultrasound: Imaging and Sensing 2023, PC123791R (9 March 2023); https://doi.org/10.1117/12.2649123

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