摘要
基于束缚态到连续态跃迁有源区能带结构,实现了2.5 THz量子级联激光器的连续波工作。激光器的输出频率随电流可在2.45-2.47 THz之间可调,在连续波工作模式下的最高输出功率大于6.0mw,最高连续波工作温度为60 K,阈值电流密度为120 A/cm2,经Si透镜整形后的输出光斑为高斯分布。
Based on bound-to-continuum intersubband transition, the 2.5 THz quantum cascade laser with a continuous-wave (CW) output power of several mW is achieved. The lasing frequency of the device can be tuned by changing the applied cur-rent. The device shows a CW output power more than 6 mW, with a threshold current density of 120 A/cm2 , and a lasing worktemperature up to 60 K, and it is a quasi-Gaussian intensity distribution after beam reformatiorL by using Si lens.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2015年第12期3-5,共3页
High Power Laser and Particle Beams
基金
国家科技部重大仪器专项(2011YQ130018)
关键词
太赫兹
量子级联激光器
连续波
子能带
高斯分布
terahertz
quantum cascade laser
continuous-wave intersubband
Gaussian distribution