• Frontiers of Optoelectronics
  • Vol. 14, Issue 1, 94–98 (2021)
Dixiang SHAO, Chen YAO, Zhanglong FU, Wenjian WAN, Ziping LI, and Juncheng CAO*
Author Affiliations
  • Key Laboratory of Terahertz Solid-State Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
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    In this paper, we presented single mode terahertz quantum cascade lasers (THz QCLs) with sampled lateral grating emitting approximately 3.4 THz. Due to strong mode selection, the implementation of sampled lateral grating on THz QCL ridges can result in stable single longitudinal mode emission with a side-mode suppression ratio larger than 20 dB. The measured peak power of the grating laser is improved by about 11.8% compared to the power of devices with uniform distributed feedback gratings. Furthermore, the far-field pattern of the presented device is uninfluenced by grating structures.
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    Dixiang SHAO, Chen YAO, Zhanglong FU, Wenjian WAN, Ziping LI, Juncheng CAO. Terahertz quantum cascade lasers with sampled lateral gratings for single mode operation[J]. Frontiers of Optoelectronics, 2021, 14(1): 94
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    Received: Aug. 14, 2020
    Accepted: Oct. 1, 2020
    Published Online: Sep. 3, 2021
    The Author Email: CAO Juncheng (jccao@mail.sim.ac.cn)