A New Photorefractive Polymer/Liquid Crystal System

• 来源期刊: 中国物理快报(英文版)
• 学科: 物理学
• 年，卷（期）: 2001,（7）
• 所属期刊栏目: FUNDAMENTAL AREAS OF PHENOMENOLOGY
• 页码范围: 909-911
• 页数: 3页
• 分类号: O4
• 语种: 英文

摘要

The photorefractive properties of PVK-based polymeric composites doped with three liquid crystals, 4OCB (4-pertyloxy-4'-cyanobiphenyl), 5OCB (4-pentyloxy-4'-cyanobiphenyl) and 8OCB ( 4-octyloxy-4'-cyanobiphenyl),were investigated by using the two-beam coupling experiment at 633nm. A gain coefficient over 34 cm-1 at an applied field of 60 V/μm was observed. Among the three materials, the 8OCB-doped composite demonstrated a stronger orientational effect and the influence on charge field became apparent.