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

被引：1
|
作者：
Shao, Dixiang [1 ]
Yao, Chen [1 ]
Fu, Zhanglong [1 ]
Wan, Wenjian [1 ]
Li, Ziping [1 ]
Cao, Juncheng [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Key Lab Terahertz Solid State Technol, Shanghai 200050, Peoples R China
来源：
FRONTIERS OF OPTOELECTRONICS | 2021年 / 14卷 / 01期
基金：
上海市自然科学基金; 国家重点研发计划; 中国国家自然科学基金;
关键词：
terahertz (THz); quantum cascade laser (QCL); sampled lateral grating;
D O I：
10.1007/s12200-020-1083-2
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
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.
引用
收藏
页码：94 / 98
页数：5
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