强激光与粒子束, 2015, 27 (12): 120102, 网络出版: 2015-12-18
2.5THz量子级联激光器的研制
Fabrication of 2.5 THz quantum cascade laser
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
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6.0 mW,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。
Abstract
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 current. The device shows a CW output power more than 6 mW, with a threshold current density of 120 A/cm2, and a lasing work temperature up to 60 K, and it is a quasi-Gaussian intensity distribution after beam reformation by using Si lens.
王雪敏, 沈昌乐, 蒋涛, 湛治强, 黎维华, 彭丽萍, 邓青华, 樊龙, 王新明, 阎大伟, 赵妍, 吴卫东, 唐永建. 2.5THz量子级联激光器的研制[J]. 强激光与粒子束, 2015, 27(12): 120102. Wang Xuemin, Shen Changle, Jiang Tao, Zhan Zhiqiang, Li Weihua, Peng Liping, Deng Qinghua, Fan Long, Wang Xinming, Yan Dawei, Zhao Yan, Wu Weidong, Tang Yongjian. Fabrication of 2.5 THz quantum cascade laser[J]. High Power Laser and Particle Beams, 2015, 27(12): 120102.
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