Buchmann, J;
Guggenheim, J;
Zhang, E;
Scharfenorth, C;
Spannekrebs, B;
Villringer, C;
Laufer, J;
(2017)
Characterization and modeling of Fabry–Perot ultrasound sensors with hard dielectric mirrors for photoacoustic imaging.
Applied Optics
, 56
(17)
pp. 5039-5046.
10.1364/AO.56.005039.
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Abstract
A Fabry–Perot ultrasound sensor with nonhygroscopic dielectric mirrors made out of Ta2O5 and SiO2 for use in photoacoustic tomography is described. The sensor offers flat frequency response up to 36 MHz, low noise-equivalent pressure (70 Pa), and near-omnidirectional response up to 20 MHz as well as optical transparency for near-infrared illumination. A numerical model was developed to predict its frequency response, and the results were validated experimentally. An image of the human palm was acquired to demonstrate in vivo imaging capabilities.
| Type: | Article |
|---|---|
| Title: | Characterization and modeling of Fabry–Perot ultrasound sensors with hard dielectric mirrors for photoacoustic imaging |
| DOI: | 10.1364/AO.56.005039 |
| Publisher version: | https://doi.org/10.1364/AO.56.005039 |
| Language: | English |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1560545 |
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