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Proceedings Paper

High-efficiency time-reversed ultrasonically encoded optical focusing using a large-area photorefractive polymer
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Paper Abstract

Time-reversed ultrasonically encoded (TRUE) optical focusing focuses light beyond one transport mean free path by phase-conjugating the ultrasonically tagged light. However, in previous works, only a small portion of the tagged light was phase-conjugated by using a photorefractive Bi12SiO20 crystal, due to its small active area (1x1 cm2). In this work, we report high-efficiency TRUE focusing using a large-area photorefractive polymer (5x5 cm2), which demonstrated ~40 times increase in focused energy. Further, we imaged absorbers embedded in a turbid sample of thickness of ~12 transport mean free paths.

Paper Details

Date Published: 4 March 2013
PDF: 6 pages
Proc. SPIE 8581, Photons Plus Ultrasound: Imaging and Sensing 2013, 85811G (4 March 2013); doi: 10.1117/12.2005021
Show Author Affiliations
Yuta Suzuki, Washington Univ. in St. Louis (United States)
Puxiang Lai, Washington Univ. in St. Louis (United States)
Xiao Xu, Washington Univ. in St. Louis (United States)
Lihong V. Wang, Washington Univ. in St. Louis (United States)


Published in SPIE Proceedings Vol. 8581:
Photons Plus Ultrasound: Imaging and Sensing 2013
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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