Complex wavefront shaping for optimal depth-selective focusing in optical coherence tomography.

Citation data:

Optics express, ISSN: 1094-4087, Vol: 21, Issue: 3, Page: 2890-902

Publication Year:
2013
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Repository URL:
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-21-3-2890
PMID:
23481747
DOI:
10.1364/oe.21.002890
Author(s):
Jang, Jaeduck, Lim, Jaeguyn, Yu, Hyeonseung, Choi, Hyun, Ha, Jinyong, Park, Jung-Hoon, Oh, Wang-Yuhl, Jang, Wooyoung, Lee, SeongDeok, Park, YongKeun
Publisher(s):
The Optical Society
Tags:
Physics and Astronomy
article description
We report on an approach to exploit multiple light scattering by shaping the incident wavefront in optical coherence tomography (OCT). Most of the reflected signal from biological tissue consists of multiply scattered light, which is regarded as noise in OCT. A digital mirror device (DMD) is utilized to shape the incident wavefront such that the maximal energy is focused at a specific depth in a highly scattering sample using a coherence-gated reflectance signal as feedback. The proof-of-concept experiment demonstrates that this approach enhances depth-selective focusing in the presence of optical inhomogeneity, and thus extends the penetration depth in spectral domain-OCT (SD-OCT).

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