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Proceedings Paper

Liquid crystal writable gratings for beam steering
Author(s): Yali Gao; Mingwei Li; Yongji Shi; Fang Ye
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Paper Abstract

Liquid crystal writable grating technology is being developed for beam steering in laser radar systems. It is ability to steer broad-spectral -band radiation for us in passive sensors. There is potential for these devices in microscan systems because there is little or no dispersion for the small scan angles required in microscanning. The dispersion that is less than the resolution of the sensor considered here. For large angle steering, the dispersion correction or a narrowing of the spectral bandwidth is required. The degradation in sensitivity resulting from narrowing the spectral bandwidth is considered. A high quantum efficiently step-stare sensor with a two-dimensional focal plane array responsive over a narrow spectral width can achieve the same sensitivity as current linear scanning sensors while being able to steer the field of view(FOV) over a larger field of regard with no moving parts. A promising approach for steering a narrow FOV with broad spectral content and good resolution is described.

Paper Details

Date Published: 22 October 2010
PDF: 5 pages
Proc. SPIE 7658, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, 76581V (22 October 2010); doi: 10.1117/12.866669
Show Author Affiliations
Yali Gao, Luoyang Institute of Science and Technology (China)
Mingwei Li, Luoyang Institute of Science and Technology (China)
Yongji Shi, Luoyang Institute of Science and Technology (China)
Fang Ye, Luoyang Institute of Science and Technology (China)


Published in SPIE Proceedings Vol. 7658:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology
Yadong Jiang; Bernard Kippelen; Junsheng Yu, Editor(s)

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