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Optical Engineering

Wide-angle achromatic prism beam steering for infrared countermeasures and imaging applications: solving the singularity problem in the two-prism design
Author(s): Philip J. Bos; Henry Garcia; Vassili Sergan
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Paper Abstract

A two-rotating-prism system is an inexpensive lightweight two-dimensional beam steering device. It can be designed to be achromatic over a wide spectral range. However, the current two-prism achromatic design has a singularity problem at the center of the "field of view": if a beam is to be steered through the center, one of the prisms must make an instantaneous 90° flip. In our work we proposed a solution to this problem by adding a third prism to the system. The main thrust of this study was optimization of the apparatus by minimizing dispersion effects as well as predicting the theoretical speed and manner in which the beam may be steered.

Paper Details

Date Published: 1 November 2007
PDF: 5 pages
Opt. Eng. 46(11) 113001 doi: 10.1117/1.2802147
Published in: Optical Engineering Volume 46, Issue 11
Show Author Affiliations
Philip J. Bos, Kent State Univ. (United States)
Henry Garcia, Univ. of California/Berkeley (United States)
Vassili Sergan, California State Univ./Sacramento (United States)

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