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Proceedings Paper

Sagnac-interferometry-based digital optical phase conjugation (DOPC) system for turbidity suppression
Author(s): Timothy R. Hillman; YongKeun Park; Zahid Yaqoob; Wonshik Choi; Dan Fu; Toyohiko Yamauchi; Ramachandra R. Dasari; Michael S. Feld
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Paper Abstract

Multiple scattering is a significant obstacle in the optical imaging of biological samples. However, it is possible to reverse its effects through optical phase conjugation (OPC) of the scattered field. We perform digital OPC (DOPC) utilizing a spatial light modulator (SLM) and a Sagnac interferometer geometry. This design permits a simple and robust DOPC implementation, which we demonstrate experimentally. We exploit the beam-shaping flexibility of the SLM to demonstrate the possibility to enhance either the optical power transmission or the light focusing ability of the DOPC process.

Paper Details

Date Published: 23 February 2011
PDF: 8 pages
Proc. SPIE 7904, Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XVIII, 790417 (23 February 2011); doi: 10.1117/12.875918
Show Author Affiliations
Timothy R. Hillman, Massachusetts Institute of Technology (United States)
YongKeun Park, Massachusetts Institute of Technology (United States)
KAIST (Korea, Republic of)
Zahid Yaqoob, Massachusetts Institute of Technology (United States)
Wonshik Choi, Massachusetts Institute of Technology (United States)
Korea Univ. (Korea, Republic of)
Dan Fu, Massachusetts Institute of Technology (United States)
Toyohiko Yamauchi, Massachusetts Institute of Technology (United States)
Hamamatsu Photonics K. K. (Japan)
Ramachandra R. Dasari, Massachusetts Institute of Technology (United States)
Michael S. Feld, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 7904:
Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XVIII
Jose-Angel Conchello; Carol J. Cogswell; Tony Wilson; Thomas G. Brown, Editor(s)

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