Phase-locked array of quantum cascade lasers with an integrated Talbot cavity

被引：27

作者：

Wang, Lei ^{[1
,2
]}

Zhang, Jinchuan ^{[2
]}

Jia, Zhiwei ^{[2
]}

Zhao, Yue ^{[2
]}

Liu, Chuanwei ^{[2
]}

Liu, Yinghui ^{[2
]}

Zhai, Shenqiang ^{[2
]}

Ning, Zhuo ^{[2
]}

Xu, Xiangang ^{[1
]}

Liu, Fengqi ^{[2
]}

机构：

[1] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China

[2] Chinese Acad Sci, Inst Semicond, Key Lab Semicond Mat Sci, POB 912, Beijing 100083, Peoples R China

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 26期

基金：

中国国家自然科学基金; 北京市自然科学基金;

关键词：

SEMICONDUCTOR-LASERS;

D O I：

10.1364/OE.24.030275

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We show a phase-locked array of three quantum cascade lasers with an integrated Talbot cavity at one side of the laser array. The coupling scheme is called diffraction coupling. By controlling the length of Talbot to be a quarter of Talbot distance (Zt/4), in-phase mode operation can be selected. The in-phase operation shows great modal stability under different injection currents, from the threshold current to the full power current. The far-field radiation pattern of the in-phase operation contains three lobes, one central maximum lobe and two side lobes. The interval between adjacent lobes is about 10.5 degrees. The output power is about 1.5 times that of a single-ridge laser. Further studies should be taken to achieve better beam performance and reduce optical losses brought by the integrated Talbot cavity. (C) 2016 Optical Society of America

引用

页码：30275 / 30281

页数：7

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