Suzuki, Yuta and Lai, Puxiang and Xu, Xiao and Wang, Lihong (2013) High-efficiency time-reversed ultrasonically encoded optical focusing using a large-area photorefractive polymer. In: Photons Plus Ultrasound: Imaging and Sensing 2013. Proceedings of SPIE. No.8581. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 85811G. ISBN 9780819493507. https://resolver.caltech.edu/CaltechAUTHORS:20180914-150421730
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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 Bi_(12)SiO_(20) crystal, due to its small active area (1x1 cm^2). In this work, we report high-efficiency TRUE focusing using a large-area photorefractive polymer (5x5 cm^2), 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.
| Item Type: | Book Section | ||||||
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| Additional Information: | © 2013 Society of Photo-Optical Instrumentation Engineers (SPIE). | ||||||
| Subject Keywords: | optical focusing, ultrasound modulation, optical imaging, phase conjugation, time reversal, photorefractive material | ||||||
| Series Name: | Proceedings of SPIE | ||||||
| Issue or Number: | 8581 | ||||||
| DOI: | 10.1117/12.2005021 | ||||||
| Record Number: | CaltechAUTHORS:20180914-150421730 | ||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20180914-150421730 | ||||||
| Official Citation: | Yuta Suzuki, Yuta Suzuki, Puxiang Lai, Puxiang Lai, Xiao Xu, Xiao Xu, Lihong V. Wang, Lihong V. Wang, } "High-efficiency time-reversed ultrasonically encoded optical focusing using a large-area photorefractive polymer", Proc. SPIE 8581, Photons Plus Ultrasound: Imaging and Sensing 2013, 85811G (4 March 2013); doi: 10.1117/12.2005021; https://doi.org/10.1117/12.2005021 | ||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 89660 | ||||||
| Collection: | CaltechAUTHORS | ||||||
| Deposited By: | George Porter | ||||||
| Deposited On: | 14 Sep 2018 23:11 | ||||||
| Last Modified: | 16 Nov 2021 00:37 |
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