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

Andrii B. Golovin; Sergij V. Shiyanovskii; Oleg D. Lavrentovich

doi:10.1117/12.588640

12 April 2005 Gradient beam steering device based on a nematic cell with continuous ramp of the phase retardation

Andrii B. Golovin, Sergij V. Shiyanovskii, Oleg D. Lavrentovich

Proceedings Volume 5741, Emerging Liquid Crystal Technologies; (2005) https://doi.org/10.1117/12.588640
Event: Integrated Optoelectronic Devices 2005, 2005, San Jose, California, United States

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.

Citation Download Citation

Andrii B. Golovin, Sergij V. Shiyanovskii, and Oleg D. Lavrentovich "Gradient beam steering device based on a nematic cell with continuous ramp of the phase retardation", Proc. SPIE 5741, Emerging Liquid Crystal Technologies, (12 April 2005); https://doi.org/10.1117/12.588640

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