Zhai Tianrui, Zhang Xinping, Pang Zhaoguang
Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing, China.
Opt Express. 2011 Mar 28;19(7):6487-92. doi: 10.1364/OE.19.006487.
The active waveguide grating structures (AWGS) are demonstrated as distributed feedback (DFB) configuration for polymer lasers. The thin film of a typical light-emitting polymer poly [(9,9-dioctylfluorenyl-2,7-diyl)-alt-co-(1,4-benzo-{2,1',3}-thiadiazole)] acts both as the gain medium and as the waveguide. The grating structures are fabricated separately on top of the polymer film through interference lithography. The continuous and high-quality waveguide layer of the gain medium enables laser emission with narrow linewidth. Theoretical analysis and experimental verification imply potentially excellent performance of the organic DFB lasers based on the AWGS configuration. This kind of AWGS configuration is of particular importance for the design of electrically pumped polymer lasers.
有源波导光栅结构（AWGS）被证明可作为聚合物激光器的分布反馈（DFB）配置。典型的发光聚合物聚[（9,9 - 二辛基芴基 - 2,7 - 二基）- alt - 共 - （1,4 - 苯并 - {2,1',3}-噻二唑）]薄膜既作为增益介质又作为波导。通过干涉光刻在聚合物薄膜顶部单独制造光栅结构。增益介质连续且高质量的波导层实现了窄线宽的激光发射。理论分析和实验验证表明基于AWGS配置的有机DFB激光器可能具有优异的性能。这种AWGS配置对于电泵浦聚合物激光器的设计尤为重要。
