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Conference Paper
Photorefractive Effects, Materials, and Devices
La Colle sur Loup France
June 17, 2003
ISBN: 1-55752-755-5
Material Characterization: Organic (MCO)

High Performance Layered Photorefractive Polymers in Reflection Grating Geometry

O-Pil Kwon, Germano Montemezzani, Peter Günter, and Suck-Hyun Lee

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Photorefractive polymers possessing a layered structure are shown to exhibit excellent photorefractive properties in the reflection grating geometry. A composite based on a rigid backbone of poly(p-phenyleneterephthalate) and pendent carbazole groups (PPT-CZ), the nonlinear optical chromophore piperidinodicyanostyrene (PDCST), and the sensitizer C60 shows in reflection geometry a gain coefficient of 104 cm-1 and a diffraction efficiency of 4.8 percent for an applied electric field of +60 V/mm. The investigated composites do not contain any plasticizer. Nevertheless the layered structure insures excellent stability without sacrifying the large rotational electro-optic effect connected with a very low glass transition temperature associated with the side chain motion.

© 2003 Optical Society of America

OCIS Codes
(090.2900) Holography : Optical storage materials
(160.5470) Materials : Polymers
(190.5330) Nonlinear optics : Photorefractive optics
(190.7070) Nonlinear optics : Two-wave mixing

O. Kwon, G. Montemezzani, P. Günter, and S. Lee, "High Performance Layered Photorefractive Polymers in Reflection Grating Geometry," in Photorefractive Effects, Materials, and Devices, P. Delaye, C. Denz, L. Mager, and G. Montemezzani, eds., Vol. 87 of OSA Trends in Optics and Photonics (Optical Society of America, 2003), paper 262.

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