Photorefractive effect in a photoconductive electro-optic carbazole trimer

被引：64

作者：

Wang, LM ^{[1
]}

Zhang, YD ^{[1
]}

Wada, T ^{[1
]}

Sasabe, H ^{[1
]}

机构：

[1] RIKEN,INST PHYS & CHEM RES,FRONTIER RES PROGRAM,WAKO,SAITAMA 35101,JAPAN

来源：

APPLIED PHYSICS LETTERS | 1996年 / 69卷 / 06期

关键词：

D O I：

10.1063/1.117872

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present an experimental study of the photorefractive effect in a multifunctional carbazole trimer sensitized with 2,4,7-trinitro-9-fluorenone. The trimer consists of a central carbazole ring which is conjugated with two 6-dicyanovinylcarbazoles through ethynylene groups. It exhibits intrinsically photocarrier transporting, electro-optic, film-forming, and room-temperature poling properties. Photorefractive effect at a wavelength of 633 nm was demonstrated by measuring the phase shift of refractive index and asymmetric energy transfer in a two-beam coupling experiment. A large net photorefractive gain coefficient (Gamma-alpha) of 76/cm was obtained in a sensitizer-optimized material. A four-wave mixing experiment was carried out to measure the magnitude of index modulation and dynamics of the grating formation. (C) 1996 American Institute of Physics.

引用

页码：728 / 730

页数：3

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