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Proceedings Paper

Mechanisms of photorefractivity in polymer composites
Author(s): William E. Moerner; Anders Grunnet-Jepsen; C. L. Thompson; Robert J. Twieg
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Paper Abstract

We present a summary of the underlying mechanisms which govern the appearance and dynamics of the photorefractive effect in polymeric materials. Charge transport properties in polymers and their influence on the build-up of space- charge fields are discussed, and the beneficial effects from orientational enhancement of in situ room-temperature poling of nonlinear optical chromophores are reviewed. We introduce a new high performance low-glass-transition-temperature polymer composite and discuss its photorefractive properties as characterized by a thorough investigation of photoconductivity, two-wave beam coupling gain, grating phase shift, and diffraction efficiency as a function of intensity, applied electric field, and grating spacing.

Paper Details

Date Published: 15 October 1996
PDF: 12 pages
Proc. SPIE 2850, Organic Photorefractive Materials and Xerographic Photoreceptors, (15 October 1996); doi: 10.1117/12.254232
Show Author Affiliations
William E. Moerner, Univ. of California/San Diego (United States)
Anders Grunnet-Jepsen, Univ. of California/San Diego (United States)
C. L. Thompson, Univ. of California/San Diego (United States)
Robert J. Twieg, IBM Almaden Research Ctr. (United States)

Published in SPIE Proceedings Vol. 2850:
Organic Photorefractive Materials and Xerographic Photoreceptors
Stephen Ducharme; James W. Stasiak, Editor(s)

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