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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Veröffentlicht in: | arXiv.org 2013-04 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | 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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ISSN: | 2331-8422 |
DOI: | 10.48550/arxiv.1304.5076 |