Differential gain and gain compression of an overdamped interband cascade laser

被引：7
|
作者：
Fan, Zhuo-Fei [1 ]
Deng, Yu [1 ]
Ning, Chao [2 ]
Liu, Shu-Man [2 ,3 ]
Wang, Cheng [1 ,4 ]
机构：
[1] ShanghaiTech Univ, Sch Informat Sci & Technol, Shanghai 201210, Peoples R China
[2] Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China
[3] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
[4] ShanghaiTech Univ, Shanghai Engn Res Ctr Energy Efficient & Custom A, Shanghai 201210, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2021年 / 119卷 / 08期
基金：
中国国家自然科学基金;
关键词：
SEMICONDUCTOR-LASERS; QUANTUM; MODULATION; BANDWIDTH;
D O I：
10.1063/5.0062500
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
This work investigates the differential gain and gain compression factor of an interband cascade laser (ICL), through the analysis of the small-signal modulation response. The differential gain of the ICL is extracted to be 7.9 x 10(-16) cm(2), which is comparable to that of typical quantum well lasers. On the other hand, the gain compression factor is determined to be 5.1 x 10(-15 )cm(3), which is two orders of magnitude higher than the latter. In addition, we demonstrate that the ICL is overdamped due to the strong gain compression effect. It is found that the K factor governed by the damping factor and the resonance frequency is as high as 31.4 ns.
引用
收藏
页数：5
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