Terahertz quantum cascade lasers with sampled lateral gratings for single mode operation

被引：0
|
作者：
Dixiang Shao
Chen Yao
Zhanglong Fu
Wenjian Wan
Ziping Li
Juncheng Cao
机构：
[1] Chinese Academy of Sciences,Key Laboratory of Terahertz Solid
来源：
Frontiers of Optoelectronics | 2021年 / 14卷
关键词：
terahertz (THz); quantum cascade laser (QCL); sampled lateral grating;
D O I：
暂无
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学科分类号：
摘要：
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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页码：94 / 98
页数：4
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