Marques, DM;
Guggenheim, JA;
Ansari, R;
Zhang, EZ;
Beard, PC;
Munro, PRT;
(2019)
Probing the optical readout characteristics of Fabry-Perot ultrasound sensors through realistic modelling.
In:
Proceedings of the Opto-Acoustic Methods and Applications in Biophotonics IV.
SPIE
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Abstract
The Fabry-Perot interferometer (FPI) is widely used in photoacoustic imaging (PAI) as an ultrasound (US) sensor due to its high sensitivity to weak US waves. Such high sensitivity is important as it allows for increasing the depth in tissue at which PAI can access, thus strongly influencing its clinical applicability. FPI sensitivity is impacted by many factors including the FPI mirror reflectivity, focussed beam spot size, FPI cavity thickness and aberrations introduced by the optical readout system. Improving FPI sensitivity requires a mathematical model of its optical response which takes all of these factors into account. Previous attempts to construct such a model have been critically limited by unrealistic assumptions. In this work we have developed a general model of FPI optical readout which based upon electromagnetic theory. By making very few assumptions, the model is able to replicate experimental results and allows insight to be gained into the operating principles of the sensor.
| Type: | Proceedings paper |
|---|---|
| Title: | Probing the optical readout characteristics of Fabry-Perot ultrasound sensors through realistic modelling |
| Event: | Opto-Acoustic Methods and Applications in Biophotonics IV |
| Location: | Munich, Germany |
| Dates: | 23rd-27th June 2019 |
| ISBN-13: | 9781510628472 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1117/12.2527114 |
| Publisher version: | https://doi.org/10.1117/12.2527114 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Photoacoustic imaging, Electromagnetic modelling, Fabry-Perot interferometer |
| 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 Chemical Engineering 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/10085269 |
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