Frequency noise performance improvement of mutually injection-locked semiconductor lasers

被引：1
作者：
Ma, Weichao [1 ]
Xiong, Bing [1 ,3 ]
Sun, Changzheng [1 ,3 ]
Ke, Xu [1 ]
Wang, Jian [1 ,3 ]
Wang, Lai [1 ]
Hao, Zhibiao [1 ,3 ]
Han, Yanjun [1 ,2 ,3 ]
Li, Hongtao [1 ]
Yu, Jiadong [1 ,2 ,3 ]
Luo, Yi [1 ,2 ,3 ]
机构：
[1] Beijing Natl Res Ctr Informat Sci & Technol, Dept Elect Engn, Beijing 100084, Peoples R China
[2] Inst Flexible Elect Technol THU, Flexible Intelligent Optoelect Device & Technol C, Jiaxing 314006, Zhejiang, Peoples R China
[3] Tsinghua Univ, Ctr Flexible Elect Technol, Beijing 100084, Peoples R China
来源：
APPLIED PHYSICS EXPRESS | 2019年 / 12卷 / 05期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
CAVITY DIODE-LASER; PHASE NOISE; COHERENT DETECTION; LINEWIDTH; FEEDBACK; LOCKING;
D O I：
10.7567/1882-0786/ab0af7
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The frequency noise characteristic of lasers under mutual injection locking is investigated. Pronounced frequency noise suppression is demonstrated for two distributed feedback lasers mutually coupled through a fiber link with 60 ns delay, confirmed by both local oscillator heterodyne and delayed self-heterodyne methods. Locking can be secured for the weak-coupling regime and a locking map is derived. The frequency noise of the laser under mutual injection locking is found to improve with increasing coupling strength or injection current. The single-sided white frequency noise of the laser is estimated to be below 3 Hz(2) Hz(-1), corresponding to an intrinsic linewidth narrower than 9.4 Hz. (c) 2019 The Japan Society of Applied Physics
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页数：4
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