New infrared-sensitive photorefractive polymers and polymer composites

Mark Schaerlaekens; Christiaan Engels; Ahmed Hameurlaine; Wim Dehaen; Celest Samyn; André Persoons

doi:10.1117/12.505474

8 December 2003 New infrared-sensitive photorefractive polymers and polymer composites

Mark Schaerlaekens, Christiaan Engels, Ahmed Hameurlaine, Wim Dehaen, Celest Samyn, André Persoons

Proceedings Volume 5216, Organic Holographic Materials and Applications; (2003) https://doi.org/10.1117/12.505474
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

We report on the synthesis, the molecular properties and an evaluation of the photorefractive performance of different types of polymer composites. Samples were C₆₀ and (2, 4, 7-trinitro-9-fluorenylidene)malonitrile (TNFDM) sensitized and characterized by four-wave mixing and two-beam coupling experiments at 680 and 780 nm. In a first type of composite, new synthesized N-arylated carbazoles were used as bifunctional chromophores to demonstrate the importance of the relative orientation of dipole moment and polarizability tensor on the Figure-of-Merit (FOM) of photorefractive experiments. Investigations were performed on mixed inorganic/organic nanocomposites to extend the photosensitivity of the samples to longer wavelengths, photoconductivity at 980 nm was studied on PbS colloids/PVK samples. Finally, a fully functionalized photorefractive polymer was synthesized and analyzed by four-wave mixing and two beam coupling experiments. The polymer showed a strange oscillating behavior in diffraction efficiency and gain. Thus far the temporally oscillation couldn’t be explained properly.

Citation Download Citation

Mark Schaerlaekens, Christiaan Engels, Ahmed Hameurlaine, Wim Dehaen, Celest Samyn, and André Persoons "New infrared-sensitive photorefractive polymers and polymer composites", Proc. SPIE 5216, Organic Holographic Materials and Applications, (8 December 2003); https://doi.org/10.1117/12.505474

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