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Single-shot time-reversed optical focusing into and through scattering media

Cheng, Zhongtao and Yang, Jiamiao and Wang, Lihong V. (2020) Single-shot time-reversed optical focusing into and through scattering media. ACS Photonics . ISSN 2330-4022. (In Press) https://resolver.caltech.edu/CaltechAUTHORS:20200924-144352173

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Abstract

Optical time reversal can focus light through or into scattering media, which raises a new possibility for conquering optical diffusion. Because optical time reversal must be completed within the correlation time of speckles, enhancing the speed of time-reversed optical focusing is important for practical applications. Although employing faster digital devices for time-reversal helps, more efficient methodologies are also desired. Here, we report a single-shot time-reversed optical focusing method to minimize the wavefront measurement time. In our approach, all information requisite for optical time reversal is extracted from a single-shot hologram, and hence no other preconditions or measurements are required. In particular, we demonstrate the first realization of single-shot time-reversed ultrasonically encoded (TRUE) optical focusing into scattering media. By using the minimum amount of measurement, this work breaks the fundamental speed limit of digitally based time reversal for focusing into and through scattering media, and constitutes an important step toward high-speed wavefront shaping applications.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1021/acsphotonics.0c01154DOIArticle
ORCID:
AuthorORCID
Cheng, Zhongtao0000-0002-9862-2873
Yang, Jiamiao0000-0003-0006-8411
Wang, Lihong V.0000-0001-9783-4383
Additional Information:© 2020 American Chemical Society. Received 21 July 2020. Published online 18 September 2020. This work was financially supported by the National Institutes of Health (NIH) grants R01 CA186567 (NIH Director’s Transformative Research Award).
Funders:
Funding AgencyGrant Number
NIHR01 CA186567
Subject Keywords:Wavefront shaping; Optical time reversal; Scattering media; Spatial light modulator; Single-shot detection; Ultrasonically encoded optical focusing
Record Number:CaltechAUTHORS:20200924-144352173
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200924-144352173
Official Citation:Single-shot time-reversed optical focusing into and through scattering media Zhongtao Cheng, Jiamiao Yang, and Lihong V. Wang ACS Photonics Just Accepted Manuscript DOI: 10.1021/acsphotonics.0c01154
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:105529
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:24 Sep 2020 22:23
Last Modified:24 Sep 2020 22:23

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