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Optical Engineering

Measurement of the phase modulation in liquid crystal television based on the fractional-Talbot effect
Author(s): Alfonso Serrano-Heredia; Guowen Lu; Purwadi Purwosumarto; Francis T. S. Yu
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Paper Abstract

We present a novel technique for measuring phase modulation in a liquid crystal television (LCTV) panel using the fractional-Talbot effect. We show that the phase modulation property in an LCTV can be obtained by measuring the contrast ratio of the Fresnel diffraction field at one quarter of the Talbot distance. We also generate a multilevel phase grating that produces a Talbot array illuminator to verify the experimental measurement result.

Paper Details

Date Published: 1 September 1996
PDF: 5 pages
Opt. Eng. 35(9) doi: 10.1117/1.600834
Published in: Optical Engineering Volume 35, Issue 9
Show Author Affiliations
Alfonso Serrano-Heredia, National Institute for Astrophysics, Optics and El (Mexico)
Guowen Lu, The Pennsylvania State Univ. (United States)
Purwadi Purwosumarto, The Pennsylvania State Univ. (United States)
Francis T. S. Yu, The Pennsylvania State Univ. (United States)


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