A photoacoustic microscopy system using MEMS and fibre tip transducers for all-optical control

Donnachie, Mark and Tinning, Peter W. and Uttamchandani, Deepak and Bauer, Ralf (2022) A photoacoustic microscopy system using MEMS and fibre tip transducers for all-optical control. Proceedings of SPIE, 11960. 1196018. ISSN 0277-786X (https://doi.org/10.1117/12.2609765)

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Abstract

A 3D photoacoustic microscopy (PAM) system is presented and characterized, using optical MEMS and fibre tip transducers as active elements to provide all-optical positioning and read-out. The excitation beam position is controlled using an electrostatically actuated 2-axis MEMS scanner. This allows for fast 3D scanning without motion-induced artefacts caused by stage scanning, and selective imaging of regions of interest. A 20 MHz fibre tip transducer is used for acoustic detection, which allows a variety of sample holders to be used including common approaches such as multi-well plates and petri-dishes.

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