Abstract
The Fabry-Pérot 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.
© 2019 SPIE/OSA
PDF ArticleMore Like This
Dylan M. Marques, Oliver Sheppard, Edward Z. Zhang, Paul C. Beard, Peter R. T. Munro, and James A. Guggenheim
126310U European Conference on Biomedical Optics (ECBO) 2023
Qingguo Sun, Na Chen, Yuetong Ding, Zhenyi Chen, and Tingyun Wang
WL103 Asia Communications and Photonics Conference and Exhibition (ACP) 2009
Werner Lebek, Frank Heyroth, Frank Syrowatka, Claus Villringer, Sylvia Goerlitz, and Jan Laufer
126310Y European Conference on Biomedical Optics (ECBO) 2023