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Optical Engineering

Measurement and modeling of the angular dispersion in liquid crystal broadband beam steering devices
Author(s): Vincent G. Dominic; Alan J. Carney; Edward A. Watson
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Paper Abstract

Liquid crystal beam steering devices behave like blazed diffraction gratings: the design wavelength can be nicely diffracted into a single order. Unfortunately, the grating nature of these devices causes strong angular dispersion of the transmitted light when the incident beam contains a broad spectrum of wavelengths. We characterized the behavior of a liquid crystal beam steerer for broadband illumination. We report experimental measurements of the impulse response of the beam steering device as a function of illumination wavelength. We also compare our results to a theoretical analysis utilizing the beam-propagation method (BPM). We find that even a simple model of the phase profile gives good agreement with the experimental measurements.

Paper Details

Date Published: 1 December 1996
PDF: 9 pages
Opt. Eng. 35(12) doi: 10.1117/1.601095
Published in: Optical Engineering Volume 35, Issue 12
Show Author Affiliations
Vincent G. Dominic, Univ. of Dayton (United States)
Alan J. Carney, Univ. of Dayton (United States)
Edward A. Watson, Air Force Wright Lab. (United States)

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