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Proceedings Paper

Efficient T/R switch design for beam steering with liquid crystal spatial light modulator
Author(s): Katherine L. Drain; Qiwen Zhan
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Paper Abstract

Liquid crystal spatial light modulators have important applications in nonmechanical beam steering. In this application, a suitable T/R switch that separates the transmitter and receiver of the system is required. Since LC devices require a certain linear polarization state incident upon it in order to steer an incoming laser beam, previous T/R switches through the use of the combination of a circular polarization state and a polarization beam splitter proved to be a lossy solution. Through the use of a two dimensional reflection type liquid crystal spatial light modulator and a large clear aperture Faraday rotator, it is possible to develop a fairly compact and efficient nonmechanical beam steering device, which can be utilized in laser scanning imaging systems. In this paper, we will present the design of such a T/R switch. Experimental results at a 1.06 μm operation wavelength will be demonstrated.

Paper Details

Date Published: 28 April 2009
PDF: 9 pages
Proc. SPIE 7339, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications V, 73390E (28 April 2009); doi: 10.1117/12.823410
Show Author Affiliations
Katherine L. Drain, Univ. of Dayton (United States)
Qiwen Zhan, Univ. of Dayton (United States)


Published in SPIE Proceedings Vol. 7339:
Enabling Photonics Technologies for Defense, Security, and Aerospace Applications V
Michael J. Hayduk; Peter J. Delfyett; Andrew R. Pirich; Eric J. Donkor, Editor(s)

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