Azo dye-doped photorefractive polymers

Boris L. Volodin; Klaus Meerholz; - Sandalphon; Bernard Kippelen; Nasser Peyghambarian

doi:10.1117/12.177217

2 June 1994 Azo dye-doped photorefractive polymers

Boris L. Volodin, Klaus Meerholz, - Sandalphon, Bernard Kippelen, Nasser Peyghambarian

Proceedings Volume 2144, Advanced Photonics Materials for Information Technology; (1994) https://doi.org/10.1117/12.177217
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

The studies of the photorefractive properties of the two polymer composites based on poly(N-vinylcarbazole) (PVK) are reported. The polymers were obtained by doping PVK with 2,4,7 trinitro-9- fluorenone as a sensitizer agent and two different azo dyes as nonlinear chromophores. Best results were obtained for the polymer doped with 2,5-dimethyl-4-p-nitrophenylazoanisole, which showed a maximum diffraction efficiency of 34% at 40 V/micrometers external electric field strength in 105 micrometers thick samples. The influence of different geometries of the hologram writing- retrieval on the diffraction efficiency is described. Net amplification of one of the writing beams in two-beam coupling within the material has been observed. Recording of the holograms of 2-dimensional objects in real time has been demonstrated with good resolution and image brightness. All the results were obtained with a low power visible laser diode emitting at 675 nm.

Citation Download Citation

Boris L. Volodin, Klaus Meerholz, - Sandalphon, Bernard Kippelen, and Nasser Peyghambarian "Azo dye-doped photorefractive polymers", Proc. SPIE 2144, Advanced Photonics Materials for Information Technology, (2 June 1994); https://doi.org/10.1117/12.177217

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