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Proceedings Paper

MEMS spatial light modulators for controlled optical transmission through nearly opaque materials
Author(s): Thomas Bifano; Yang Lu; Christopher Stockbridge; Aaron Berliner; John Moore; Richard Paxman; Santosh Tripathi; Kimani Toussaint
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Paper Abstract

A reflective microelectromechanical mirror array was used to control the intensity distribution of a coherent beam that was propagated through a strongly scattering medium. The controller modulated phase spatially in a plane upstream of the scattering medium and monitored intensity spatially in a plane downstream of the medium. Optimization techniques were used to maximize the intensity at a single point in the downstream plane. Intensity enhancement by factors of several hundred were achieved within a few thousand iterations using a MEMS segmented deformable mirror (e.g. a spatial light modulator) with 1020 independent segments. Experimental results are reported for alternate optimization approaches and for optimization through dynamically translating scattering media.

Paper Details

Date Published: 15 February 2012
PDF: 9 pages
Proc. SPIE 8253, MEMS Adaptive Optics VI, 82530L (15 February 2012); doi: 10.1117/12.911384
Show Author Affiliations
Thomas Bifano, Boston Univ. Photonics Ctr. (United States)
Yang Lu, Boston Univ. Photonics Ctr. (United States)
Christopher Stockbridge, Boston Univ. Photonics Ctr. (United States)
Aaron Berliner, Boston Univ. Photonics Ctr. (United States)
John Moore, Boston Univ. Photonics Ctr. (United States)
Richard Paxman, Paxman Consulting (United States)
Santosh Tripathi, Univ. of Illinois at Urbana-Champaign (United States)
Kimani Toussaint, Univ. of Illinois at Urbana-Champaign (United States)

Published in SPIE Proceedings Vol. 8253:
MEMS Adaptive Optics VI
Scot S. Olivier; Thomas G. Bifano; Joel Kubby, Editor(s)

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