Photorefractivity in a novel polymer composite with high diffraction efficiency and broad optical transparency

被引：33

作者：

Cui, YP ^{[1
]}

Swedek, B ^{[1
]}

Cheng, N ^{[1
]}

Kim, KS ^{[1
]}

Prasad, PN ^{[1
]}

机构：

[1] SUNY BUFFALO,PHOTON RES LAB,BUFFALO,NY 14260

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1997年 / 101卷 / 18期

关键词：

D O I：

10.1021/jp963292s

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel photorefractive polymer composite has been developed in which a new organic dye, 4-[N-(2-hydroxyethyl)-N-methylamino] -4'-[(6-hydroxyhexyl)sulfonyl] stilbene, is used as a second-order nonlinear optical chromophore together with poly(N-vinylcarbazole) as the hole-transporting matrix, tricresyl phosphate as a plasticizer, and C-60 as a photosensitizer. The photoconductive, electro-optic, and photorefractive properties of the material have been experimentally studied at wavelengths of 488, 514.5, and 632.8 nm. The amplitude and the phase dependencies of the electro-optic response have been investigated. The composite shows high photorefractivity over a broad wavelength range. Diffraction efficiencies between 20% and 40% as well as net two-beam coupling gains of 25-65 cm(-1) have been obtained at wavelengths of 488, 514.5, and 632.8 nm.

引用

页码：3530 / 3534

页数：5

共 38 条

[1] Photorefractive composites with high-band-gap second-order nonlinear optical chromophores [J].