中国光学（中英文）2024，Vol.17Issue(5)：1042-1049,8.DOI:10.37188/CO.2023-0239
双有源区结构4.7μm中波红外量子级联激光器
4.7 μm mid-wave infrared quantum cascade laser with double active region structure
摘要
Abstract
This paper reports a 4.7-μm mid-wave infrared quantum cascade laser based on double active re-gion structure with a ridge width of 9.5 μm,which can achieve continuous single transverse mode operation at room temperature.By inserting 0.8-μm InP,the original single active region is transformed into a double active region structure,which can significantly reduce the peak temperature of the device's active region and suppress the generation of higher-order transverse modes.At a temperature of 288 K,the device with a double active region structure with a cavity length of 5 mm has a threshold current density of 1.14 kA/cm2,a continuous output power of 0.706 W,a fast axis divergence angle of 27.3°,and a slow axis divergence angle of 18.1°.Compared with conventional devices with a single active region structure,the devices with a double active region structure have no degradation in their maximum optical output power and show a significant improvement in the beam quality in the slow axis direction of the device.These results provide a solution to the problem of the slow axis beam quality of high-power mid-wave quantum cascade lasers.关键词
中红外/量子级联激光器/双有源区/金属有机物化学气相沉积/连续输出Key words
mid-infrared/quantum cascade laser/double active region/MOCVD/continuous-wave output分类
信息技术与安全科学引用本文复制引用
王渝沛,王俊,周大勇,章宇航,罗晓玥,钱晨灏,程洋,赵武,魏志祥,韩迪仪,孙方圆..双有源区结构4.7μm中波红外量子级联激光器[J].中国光学（中英文）,2024,17(5):1042-1049,8.基金项目
国家重点研发计划(No.2018YFB1107300) Supported by the National Key Research and Development Program of China(No.2018YFB1107300) （No.2018YFB1107300）
