Distributed Feedback Laser Based on Single Crystal Perovskite

6th conference on Advances in Optoelectronics and Micro/nano-optics

Sun, Shang^1 ; Xiao, Shumin^1 ; Song, Qinghai^1

State Key Laboratory of Tunable Laser Technology, Ministry of Industry and Information Technology, Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen

518055, China^1

关键词: Distributed feedback grating;    Fabrication process;    Fabry Perot modes;    Low defect densities;    Perovskite films;    Precipitation methods;    Single-crystalline;    Solution-processed;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/844/1/012022/pdf
DOI  :  10.1088/1742-6596/844/1/012022

来源: IOP

【 摘 要 】

We demonstrate a single crystal perovskite based, with grating-structured photoresist on top, highly polarized distributed feedback laser. A lower laser threshold than the Fabry-Perot mode lasers from the same single crystal CH3NH3PbBr3microplate was obtained. Single crystal CH3NH3PbBr3microplates was synthesized with one-step solution processed precipitation method. Once the photoresist on top of the microplate was patterned with electron beam, the device was realized. This one-step fabrication process utilized the advantage of single crystal to the greatest extend. The ultra-low defect density in single crystalline microplate offer an opportunity for lower threshold lasing action compare with poly-crystal perovskite films. In the experiment, the lasing action based on the distributed feedback grating design was found with lower threshold and higher intensity than the Fabry-Perot mode lasers supported by the flat facets of the same microplate.