Mechanisms of photorefractivity in polymer composites

William E. Moerner; Anders Grunnet-Jepsen; C. L. Thompson; Robert J. Twieg

doi:10.1117/12.254232

15 October 1996 Mechanisms of photorefractivity in polymer composites

William E. Moerner, Anders Grunnet-Jepsen, C. L. Thompson, Robert J. Twieg

Proceedings Volume 2850, Organic Photorefractive Materials and Xerographic Photoreceptors; (1996) https://doi.org/10.1117/12.254232
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

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.

Citation Download Citation

William E. Moerner, Anders Grunnet-Jepsen, C. L. Thompson, and Robert J. Twieg "Mechanisms of photorefractivity in polymer composites", Proc. SPIE 2850, Organic Photorefractive Materials and Xerographic Photoreceptors, (15 October 1996); https://doi.org/10.1117/12.254232

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