Evaluation of thermal defocusing, nonlinear scattering, and nonlinear quarter-wave stack switches

Gary L. Wood; William W. Clark III; Edward J. Sharp

doi:10.1117/12.21686

1 October 1990 Evaluation of thermal defocusing, nonlinear scattering, and nonlinear quarter-wave stack switches

Gary L. Wood, William W. Clark III, Edward J. Sharp

Proceedings Volume 1307, Electro-Optical Materials for Switches, Coatings, Sensor Optics, and Detectors; (1990) https://doi.org/10.1117/12.21686
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

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.

Citation Download Citation

Gary L. Wood, William W. Clark III, and Edward J. Sharp "Evaluation of thermal defocusing, nonlinear scattering, and nonlinear quarter-wave stack switches", Proc. SPIE 1307, Electro-Optical Materials for Switches, Coatings, Sensor Optics, and Detectors, (1 October 1990); https://doi.org/10.1117/12.21686

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