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Proceedings Paper

Molecular structure and its relation to optical limiting
Author(s): Aharon Hochbaum; Ying-Yen Hsu; James L. Fergason
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Paper Abstract

We report on the correlation between features of the molecular structure of polyphenyls and the measured parameters of optical limiting: limiting threshold and clamped output. Optical limiting in these materials is mainly due to a strong light scattering (third order negative nonlinear effect). We show that in many simple cases the limiting threshold decreases with increased conjugation length, linearity, planarity and with the substitution of acceptor/donor end groups. The UV spectra and the wavelength dependence of the limiting parameters suggests that a two photon absorption mechanism is necessary for a low threshold and efficient light scattering.

Paper Details

Date Published: 6 July 1994
PDF: 11 pages
Proc. SPIE 2229, Nonlinear Optical Materials for Switching and Limiting, (6 July 1994); doi: 10.1117/12.179593
Show Author Affiliations
Aharon Hochbaum, Optical Shields, Inc. (United States)
Ying-Yen Hsu, Optical Shields, Inc. (United States)
James L. Fergason, Optical Shields, Inc. (United States)

Published in SPIE Proceedings Vol. 2229:
Nonlinear Optical Materials for Switching and Limiting
M. J. Soileau, Editor(s)

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