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arXiv · 1304.5076

Optical-resolution photoacoustic microscopy by use of a multimode fiber

Ioannis N. Papadopoulos·Olivier Simandoux·Salma Farahi·Jean Pierre Huignard·Emmanuel Bossy·Demetri Psaltis·Christophe Moser
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Abstract

We demonstrate Optical-Resolution Photoacoustic Microscopy (OR-PAM), where the optical field is focused and scanned using Digital Phase Conjugation (DPC) through a multimode fiber. The focus is scanned across the field of view using digital means, and the acoustic signal induced is collected by a transducer. Optical-resolution photoacoustic images of a knot made by two absorptive wires are obtained and we report on resolution smaller than 1.5{\mu}m across a 201{\mu}m by 201{\mu}m field of view. The use of a multimode optical fiber for the optical excitation part can pave the way for miniature endoscopes that can provide optical-resolution photoacoustic images at large optical depth.

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Ioannis N. Papadopoulos, Olivier Simandoux, Salma Farahi, Jean Pierre Huignard, Emmanuel Bossy, Demetri Psaltis, Christophe Moser. 2013-04-18. Optical-resolution photoacoustic microscopy by use of a multimode fiber. https://doi.org/10.1063/1.4807621

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