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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 12 — Apr. 20, 2008
  • pp: 2076–2081

Spatial amplitude and phase modulation using commercial twisted nematic LCDs

E. G. van Putten, I. M. Vellekoop, and A. P. Mosk  »View Author Affiliations


Applied Optics, Vol. 47, Issue 12, pp. 2076-2081 (2008)
http://dx.doi.org/10.1364/AO.47.002076


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Abstract

We present a method for full spatial phase and amplitude control of a laser beam using a twisted nematic LCD combined with a spatial filter. By spatial filtering we combine four neighboring pixels into one superpixel. At each superpixel we are able to independently modulate the phase and the amplitude of light. We experimentally demonstrate the independent phase and amplitude modulation using this novel technique. Our technique does not impose special requirements on the spatial light modulator and allows precise control of fields even with imperfect modulators.

© 2008 Optical Society of America

OCIS Codes
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(230.3720) Optical devices : Liquid-crystal devices
(230.6120) Optical devices : Spatial light modulators
(090.1995) Holography : Digital holography

ToC Category:
Optical Devices

History
Original Manuscript: November 27, 2007
Revised Manuscript: February 27, 2008
Manuscript Accepted: March 19, 2008
Published: April 16, 2008

Citation
E. G. van Putten, I. M. Vellekoop, and A. P. Mosk, "Spatial amplitude and phase modulation using commercial twisted nematic LCDs," Appl. Opt. 47, 2076-2081 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-12-2076


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References

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