金属接触对有机薄膜激光特性的影响  

The effects of metallic contacts on the lasing characteristics of organic thin films

作　　者：郝亚茹[1] 邓招奇[1] HAO Ya-ru;DENG Zhao-qi(University of Electronic Science and Technology of China,Zhongshan Institute,Zhongshan 528402,China)

机构地区：[1]电子科技大学中山学院,广东中山528402

出　　处：《中国光学》2020年第4期866-872,共7页Chinese Optics

基　　金：国家自然科学基金(No.61605083);中山市重大专项(No.2017B1023)。

摘　　要：金属触点引起的光学损耗被认为是阻碍电泵浦有机激光器发展的主要障碍。本文对于存在金属接触电极的有机薄膜,通过设计适当的分布反馈结构形成多通道发射和表面等离子体激元(SPs),从而实现光泵浦激光。与采用无金属接触电极的有机薄膜进行对比,结果表明,本文方法可实现更好的激光性能。利用本文设计的结构,在740 nm光栅结构的Ag衬底上实现了(0.026 mJ/pulse)的激光发射。由于本文设计方法没有增加器件厚度,所以当光学性能得到改善时,电性能并没有降低。Optical loss caused by metallic contacts are thought to be a major obstacle to the achievement of organic laser diodes.We find that multi-channel emissions and Surface Plasmons(SPs)by designing a proper distributed feedback structure can allow successful lasing in organic thin films in the presence of contacting electrodes and even show better lasing performance when compared to metal-free cases.In this paper,a lower threshold(0.026 mJ/pulse)laser emission is achieved with the Ag metal electrode on the grating structure with a period of 740 nm.Since there is no increase in device thickness,the electrical properties are not reduced when the optical properties are improved.

关 键 词：有机激光 表面等离子体 光栅耦合 

分 类 号：O439[机械工程—光学工程]