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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 35, Iss. 14 — May. 10, 1996
  • pp: 2488–2498

Pseudorandom phase-only encoding of real-time spatial light modulators

Robert W. Cohn and Minhua Liang  »View Author Affiliations


Applied Optics, Vol. 35, Issue 14, pp. 2488-2498 (1996)
http://dx.doi.org/10.1364/AO.35.002488


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Abstract

We previously proposed a method of mapping full-complex spatial modulations into phase-only modulations. The Fourier transform of the encoded modulations approximates that of the original complex modulations. The amplitude of each pixel is encoded by the property that the amplitude of a random-phasor sum is reduced corresponding to its standard deviation. Pseudorandom encoding is designed for phase-only spatial light modulators that produce 360° phase shifts. Because such devices are rare, experiments are performed with a 326° modulator composed of two In Focus model TVT6000 liquid-crystal displays. Qualitative agreement with theory is achieved despite several nonideal properties of the modulator.

© 1996 Optical Society of America

History
Original Manuscript: June 9, 1995
Revised Manuscript: November 30, 1995
Published: May 10, 1996

Citation
Robert W. Cohn and Minhua Liang, "Pseudorandom phase-only encoding of real-time spatial light modulators," Appl. Opt. 35, 2488-2498 (1996)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-35-14-2488

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