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Proceedings Paper

Nonmechanical beam switching in the midinfrared waveband
Author(s): John G. Lehman Jr.; J. Michael Finlan; Kevin M. Flood; Mary E. Gerard; David C. Driscoll
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Paper Abstract

We designed an electro-optical relay system to perform nonmechanical beam switching in the mid-infrared waveband and built a proof-of-concept prototype to verify the system performance. The prototype is a scalable building block that can be used to fabricate a two-dimensional system to scan a large field of regard at high resolution, low power, and high speed. We designed, fabricated, and tested the major components and then assembled the components into the electro- optical relay system, which demonstrated 8 kHz switching between two fields of view. In order to implement the system, we fabricated mid-wave infrared polarizing beamsplitter cubes that provided excellent polarization separation over a 600 nm waveband and a range of angles of incidence. Additionally, we demonstrated 90 degree polarization rotation in the mid-wave infrared waveband using ferroelectric liquid crystals.

Paper Details

Date Published: 13 August 1997
PDF: 10 pages
Proc. SPIE 3061, Infrared Technology and Applications XXIII, (13 August 1997); doi: 10.1117/12.280361
Show Author Affiliations
John G. Lehman Jr., LSA, Inc. (United States)
J. Michael Finlan, LSA, Inc. (United States)
Kevin M. Flood, LSA, Inc. (United States)
Mary E. Gerard, LSA, Inc. (United States)
David C. Driscoll, LSA, Inc. (United States)

Published in SPIE Proceedings Vol. 3061:
Infrared Technology and Applications XXIII
Bjorn F. Andresen; Marija Strojnik, Editor(s)

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