Digital optical phase conjugation for delivering two-dimensional images through turbid media
- Authors
- Hillman, Timothy R.; Yamauchi, Toyohiko; Choi, Wonshik; Dasari, Ramachandra R.; Feld, Michael S.; Park, YongKeun; Yaqoob, Zahid
- Issue Date
- 29-5월-2013
- Publisher
- NATURE PUBLISHING GROUP
- Citation
- SCIENTIFIC REPORTS, v.3
- Indexed
- SCIE
SCOPUS
- Journal Title
- SCIENTIFIC REPORTS
- Volume
- 3
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/103198
- DOI
- 10.1038/srep01909
- ISSN
- 2045-2322
- 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.
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Collections - College of Science > Department of Physics > 1. Journal Articles
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