Articles

Transmission and phase measurement for polarization eigenvectors in twisted-nematic liquid crystal spatial light modulators

[+] Author Affiliations
Ignacio Moreno

Universitat de Valencia, Departament Interuniversitari d’Optica, C/Dr. Moliner 50, E-46100?Burjassot, Spain

Jeffrey A. Davis, Kevin G. D’Nelly, David B. Allison

San Diego State University, Department of Physics, San Diego, California?92182

Opt. Eng. 37(11), 3048-3052 (Nov 01, 1998). doi:10.1117/1.601976
History: Received Apr. 13, 1998; Revised June 22, 1998; Accepted June 25, 1998
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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 (640×480 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 high-resolution LCSLMs. © 1998 Society of Photo-Optical Instrumentation Engineers.

© 1998 Society of Photo-Optical Instrumentation Engineers

Citation

Ignacio Moreno ; Jeffrey A. Davis ; Kevin G. D’Nelly and David B. Allison
"Transmission and phase measurement for polarization eigenvectors in twisted-nematic liquid crystal spatial light modulators", Opt. Eng. 37(11), 3048-3052 (Nov 01, 1998). ; http://dx.doi.org/10.1117/1.601976


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