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Proceedings Paper

Optical limiting with liquid-crystal materials
Author(s): Aharon Hochbaum; James L. Fergason; Jesse D. Buck
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Paper Abstract

We report the characteristics of a strong 3rd order negative nonlinear effect in the nematic and smectic A liquid crystal phases as well as in the isotropic phase. Limiting is achieved as a result of a strong light scattering effect with some contribution from nonlinear absorption. We used an optical limiting setup to measure the limiting threshold and clamped output parameters. We present data regarding the dependence of these parameters on polarization direction, liquid crystalline order and alignment, depth of focus into the liquid crystal layer, cell thickness and temperature. We also discuss the temporal behavior of the limited pulses.

Paper Details

Date Published: 18 August 1992
PDF: 11 pages
Proc. SPIE 1692, Nonlinear and Electro-Optic Materials for Optical Switching, (18 August 1992); doi: 10.1117/12.138052
Show Author Affiliations
Aharon Hochbaum, Optical Shields Inc. (United States)
James L. Fergason, Optical Shields Inc. (United States)
Jesse D. Buck, Optical Shields Inc. (United States)

Published in SPIE Proceedings Vol. 1692:
Nonlinear and Electro-Optic Materials for Optical Switching
M. J. Soileau, Editor(s)

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