液晶与显示2017，Vol.32Issue(11)：853-860,8.DOI:10.3788/YJYXS20173211.0853
基于液晶/聚合物光栅选频的高效率有机半导体激光器
High efficiency organic semiconductor laser using a liquid crystal /polymer grating as an oscillation cavity
摘要
Abstract
We reported a fabrication technique of a high efficiency organic semiconductor laser device, which used a liquid crystal/polymer grating as an oscillation cavity .To fabricate a distributed feedback (DFB) organic semiconductor laser ,the active medium poly [-methoxy-5-(2'-ethyl- hexyloxy )-1 ,4-phenylene- vinylene] (MEH-PPV ) film was spin-coated on a piece of clean glass plate ,and then a liq-uid crystal/polymer grating was fabricated on the MEH-PPV film via localized photo polymerization under an optical interference field .The lasing threshold was 0 .32 μJ/pulse ,and the conversion effi-ciency was as high as 7 .8% .The lasing beams showed good character in s-polarization .The lasing beam pattern was collected by a digital camera ,which showed a fan-shaped geometry .The 53 .4 nm lasing range was obtained by varying the grating period .The high efficiency organic semiconductor laser in this work provides guidance for fabricating a novel organic laser device .关键词
有机半导体激光器/液晶/聚合物光栅/分布反馈Key words
organic semiconductor laser/liquid crystal/polymer grating/distributed feedback分类
数理科学引用本文复制引用
刘明欢,李大禹,姚丽双,刘永刚,彭增辉,曹召良,宣丽..基于液晶/聚合物光栅选频的高效率有机半导体激光器[J].液晶与显示,2017,32(11):853-860,8.基金项目
国家自然科学基金(No.61377032 ,No.61378075) Supported by National Nature Science Foundation of China (No.61377032 ,No.61378075) （No.61377032 ,No.61378075）
