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Optical Engineering

Transmission and phase measurements for polarization eigenvectors in twisted-nematic liquid crystal spatial light modulators
Author(s): Ignacio Soriano Moreno; Jeffrey A. Davis; Kevin D'Nelly; David B. Allison
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Paper Abstract

Recently we published theoretical expressions for the eigenvalues and eigenvectors for a twisted-nematic liquid crystal spatial light modulator (LCSLM) as a function of the twist angle and birefringence using the Jones matrix formalism. These polarization eigenvectors are of interest for newer video graphics adapter (VGA) resolution (640 3480 pixels) LCSLMs that are thinner and consequently have a lower birefringence. Although these devices can produce excellent amplitude modulation, they cannot achieve phase-only modulation using linearly polarized light. In these cases, the polarization eigenvectors are required to obtain phase-only modulation. We present experimental measurements for both the transmission and phase shift for these polarization eigenvectors. These results are in excellent agreement with theory and show that phase-only modulation can be obtained for these highresolution LCSLMs.

Paper Details

Date Published: 1 November 1998
PDF: 5 pages
Opt. Eng. 37(11) doi: 10.1117/1.601976
Published in: Optical Engineering Volume 37, Issue 11
Show Author Affiliations
Ignacio Soriano Moreno, Univ. Miguel Hernandez (Spain)
Jeffrey A. Davis, San Diego State Univ. (United States)
Kevin D'Nelly, San Diego State Univ. (United States)
David B. Allison, San Diego State Univ. (United States)

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