Beam combining of a broadly and continuously tunable quantum cascade laser

• Main Authors: Sun, Fangyuan, Li, Jinghao, Tan, Kian Hua, Wicaksono, Satrio, Chua, Yun Da, Wang, Chongwu, Dai, Mingjin, Voo, Roth Qin Gui, Yoon, Soon Fatt, Wang, Qi Jie
• 其他作者: School of Electrical and Electronic Engineering
• 格式: Article
• 語言: English
• 出版: 2023
• 主題: Engineering::Electrical and electronic engineering; Aspherical Lens; Beam Combining
• 在線閱讀: https://hdl.handle.net/10356/165643
• 機構: Nanyang Technological University

We report a cost-efficient method to demonstrate the beam combining of five laser elements in an array of tunable slot waveguide quantum cascade lasers in the mid-infrared region at around 10 µm. An aspherical lens with five fine-tuned mini mirrors was employed to collimate the individual beams from...