Sagnac-interferometry-based digital optical phase conjugation (DOPC) system for turbidity suppression

Timothy R. Hillman; YongKeun Park; Zahid Yaqoob; Wonshik Choi; Dan Fu; Toyohiko Yamauchi; Ramachandra R. Dasari; Michael S. Feld

doi:10.1117/12.875918

23 February 2011 Sagnac-interferometry-based digital optical phase conjugation (DOPC) system for turbidity suppression

Timothy R. Hillman, YongKeun Park, Zahid Yaqoob, Wonshik Choi, Dan Fu, Toyohiko Yamauchi, Ramachandra R. Dasari, Michael S. Feld

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Proceedings Volume 7904, Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XVIII; 790417 (2011) https://doi.org/10.1117/12.875918
Event: SPIE BiOS, 2011, San Francisco, California, United States

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.

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Timothy R. Hillman, YongKeun Park, Zahid Yaqoob, Wonshik Choi, Dan Fu, Toyohiko Yamauchi, Ramachandra R. Dasari, and Michael S. Feld "Sagnac-interferometry-based digital optical phase conjugation (DOPC) system for turbidity suppression", Proc. SPIE 7904, Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XVIII, 790417 (23 February 2011); https://doi.org/10.1117/12.875918

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KEYWORDS

Spatial light modulators

Phase conjugation

Scattering

Light scattering

Tissue optics

Optical proximity correction

Laser scattering

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