Format

Send to

Choose Destination
Opt Express. 2010 Feb 15;18(4):3444-55. doi: 10.1364/OE.18.003444.

Implementation of a digital optical phase conjugation system and its application to study the robustness of turbidity suppression by phase conjugation.

Author information

1
Department of Electrical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 136-93, CA, 91125, USA. mcui@caltech.edu

Abstract

In this work, we report a novel high capacity (number of degrees of freedom) open loop adaptive optics method, termed digital optical phase conjugation (DOPC), which provides a robust optoelectronic optical phase conjugation (OPC) solution. We showed that our prototype can phase conjugate light fields with approximately 3.9 x 10(-3) degree accuracy over a range of approximately 3 degrees and can phase conjugate an input field through a relatively thick turbid medium (micro(s)l approximately 13). Furthermore, we employed this system to show that the reversing of random scattering in turbid media by phase conjugation is surprisingly robust and accommodating of phase errors. An OPC wavefront with significant spatial phase errors (error uniformly distributed from - pi/2 to pi/2) can nevertheless allow OPC reconstruction through a scattering medium with approximately 40% of the efficiency achieved with phase error free OPC.

PMID:
20389354
PMCID:
PMC3378352
DOI:
10.1364/OE.18.003444
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Optical Society of America Icon for PubMed Central
Loading ...
Support Center