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Proceedings Paper

Gradient beam steering device based on a nematic cell with continuous ramp of the phase retardation
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Paper Abstract

In order to develop a fine angular beam steering technique (milliradian and less), we propose a nematic liquid crystal cell with a continuous gradient of the refractive index. This continuous gradient is controlled by applying the driving voltage to non-patterned indium-tin oxide electrodes. We employed the dual-frequency nematic liquid crystal in the cell with high pretilt alignment. The experiments with dual-frequency nematic confirmed that non-patterned electrically controlled nematic cell with the continuous gradient of refractive index is capable of angular beam steering in the milliradian range.

Paper Details

Date Published: 12 April 2005
PDF: 8 pages
Proc. SPIE 5741, Emerging Liquid Crystal Technologies, (12 April 2005); doi: 10.1117/12.588640
Show Author Affiliations
Andrii B. Golovin, Kent State Univ. (United States)
Sergij V. Shiyanovskii, Kent State Univ. (United States)
Oleg D. Lavrentovich, Kent State Univ. (United States)


Published in SPIE Proceedings Vol. 5741:
Emerging Liquid Crystal Technologies
Liang-Chy Chien, Editor(s)

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