Enhanced Photorefractive Effect in Hybrid Conducting Polymer - Liquid Crystal Structures
作者:
Stanislaw Bartkiewicz,
Andrzej Miniewicz,
Francois Kajzar,
Malgorzata Zagórska,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 1998)
卷期:
Volume 322,
issue 1
页码: 9-20
ISSN:1058-725X
年代: 1998
DOI:10.1080/10587259808030194
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
We report about a nematic liquid crystal device suitable for efficient coherent beam amplification. A proposed novel hybrid structure is composed of nematic liquid crystal layer sandwiched between suitable ultra thin photoconducting (Disperse Red 1 functionalized polythiophene) polymeric surface layers serving as orienting as well as space charge generating layers upon light incidence. The gain coefficient measured at incidence angle 45∠ in 10 μm thick liquid crystal layer in a conventional two-wave mixing experiment is one of the highest reported so far for the similar systems and amounts tog= 7. The net exponential gain coefficient is very high Γ 2600 cm−1and is obtained at voltages below 1 V/μm.
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