Digital optical phase conjugation for delivering two-dimensional images through turbid media
Name
Hillman-2013-Digital optical phase.pdf
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774.8 KB
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Checksum (MD5)
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Author(s)
Yamauchi, Toyohiko
Choi, Wonshik
Feld, Michael S.
Park, YongKeun
Yaqoob, Zahid
Hillman, Timothy Robert
Dasari, Ramachandra Rao
Date Issued
May 2013
Journal
Scientific Reports
Publisher
Nature Publishing Group
Citation
Hillman, Timothy R., Toyohiko Yamauchi, Wonshik Choi, Ramachandra R. Dasari, Michael S. Feld, YongKeun Park, and Zahid Yaqoob. “Digital Optical Phase Conjugation for Delivering Two-Dimensional Images through Turbid Media.” Sci. Rep. 3 (May 29, 2013).
Version
Final published version
Abstract
Optical transmission through complex media such as biological tissue is fundamentally limited by multiple light scattering. Precise control of the optical wavefield potentially holds the key to advancing a broad range of light-based techniques and applications for imaging or optical delivery. We present a simple and robust digital optical phase conjugation (DOPC) implementation for suppressing multiple light scattering. Utilizing wavefront shaping via a spatial light modulator (SLM), we demonstrate its turbidity-suppression capability by reconstructing the image of a complex two-dimensional wide-field target through a highly scattering medium. Employing an interferometer with a Sagnac-like ring design, we successfully overcome the challenging alignment and wavefront-matching constraints in DOPC, reflecting the requirement that the forward- and reverse-propagation paths through the turbid medium be identical. By measuring the output response to digital distortion of the SLM write pattern, we validate the sub-wavelength sensitivity of the system.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Spectroscopy Laboratory
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Creative Commons Attribution-NonCommercial-NoDerivs 3.0
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DOI of Published Version
https://doi.org/10.1038/srep01909
