Optical-resolution photoacoustic microscopy by use of a multimode fiber
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 tr...
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| creator | Papadopoulos, Ioannis N Simandoux, Olivier Farahi, Salma Huignard, Jean Pierre Bossy, Emmanuel Psaltis, Demetri Moser, Christophe |
| description | 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. |
| doi_str_mv | 10.48550/arxiv.1304.5076 |
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| subjects | Absorptivity Cables Conjugation Endoscopes Field of view Microscopy Optical fibers Phase conjugation Photoacoustic microscopy Physics - Optics |
| title | Optical-resolution photoacoustic microscopy by use of a multimode fiber |
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