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Proceedings Paper

Evaluation of thermal defocusing, nonlinear scattering, and nonlinear quarter-wave stack switches
Author(s): Gary L. Wood; William W. Clark; Edward J. Sharp
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Paper Abstract

Thermal defocusing, nonlinear scattering and deflection, and nonlinear quarter-wave stack switches are passive limiters that have the ability to be extremely fast, simple in design, and require little maintenance. In this paper we model the performance of these devices in terms of transmission and/or throughput energy. A simple optical design is considered in which incident radiation from infinity is focused on the device, then recollected and reimaged on a detector plane. Values for the effective nonlinear index of refraction and the nonlinear time response are chosen which limit the incident radiation to a specified optical density. The overall performance of the protection device can then be investigated based on the dynamic range, damage threshold, and linear transmission.

Paper Details

Date Published: 1 October 1990
PDF: 19 pages
Proc. SPIE 1307, Electro-Optical Materials for Switches, Coatings, Sensor Optics, and Detectors, (1 October 1990); doi: 10.1117/12.21686
Show Author Affiliations
Gary L. Wood, U.S. Army Night Vision and Ele (United States)
William W. Clark, U.S. Army Night Vision and Ele (United States)
Edward J. Sharp, U.S. Army Night Vision and Ele (United States)


Published in SPIE Proceedings Vol. 1307:
Electro-Optical Materials for Switches, Coatings, Sensor Optics, and Detectors
Rudolf Hartmann; M. J. Soileau; Vijay K. Varadan, Editor(s)

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