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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 11, Iss. 6 — Jun. 1, 1986
  • pp: 398–400

Phase correction of light modulators

David Casasent and Shao-Feng Xia  »View Author Affiliations


Optics Letters, Vol. 11, Issue 6, pp. 398-400 (1986)
http://dx.doi.org/10.1364/OL.11.000398


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Abstract

A new and inexpensive holographic technique for measuring the phase errors of a two-dimensional spatial light modulator (SLM) is described, and experimental verification is provided. A new technique to correct spatial phase errors in any SLM is then detailed and experimentally demonstrated. This technique is employed for the Radio Shack liquid-crystal television SLM, and a shift-invariant correlator is obtained. Additional low-pass filtering techniques (appropriate for any SLM with a fixed pattern of modulating cells) are discussed that provide improved contrast and achieve proper correlations.

© 1986 Optical Society of America

History
Original Manuscript: February 18, 1986
Manuscript Accepted: March 31, 1986
Published: June 1, 1986

Citation
David Casasent and Shao-Feng Xia, "Phase correction of light modulators," Opt. Lett. 11, 398-400 (1986)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-11-6-398

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