High-brightness spectral beam combining of diode laser array stack in an external cavity

被引：43

作者：

Meng, Huicheng ^{[1
,2
,3
]}

Sun, Tangyou ^{[1
,2
]}

Tan, Hao ^{[1
,2
]}

Yu, Junhong ^{[1
,2
]}

Du, Weichuan ^{[1
,2
]}

Tian, Fei ^{[1
,2
]}

Li, Jianming ^{[1
,2
]}

Gao, Songxing ^{[1
,2
]}

Wang, Xiaojun ^{[2
,4
]}

Wu, Deyong ^{[1
,2
]}

机构：

[1] China Acad Engn Phys, Inst Appl Elect, Mianyang 621900, Sichuan, Peoples R China

[2] China Acad Engn Phys, Key Lab Sci & Technol High Energy Laser, Mianyang 621900, Sichaun, Peoples R China

[3] China Acad Engn Phys, Grad Sch, Beijing 100088, Peoples R China

[4] China Acad Engn Phys, Inst Appl Phys & Computat Math, Beijing 100088, Peoples R China

来源：

OPTICS EXPRESS | 2015年 / 23卷 / 17期

关键词：

D O I：

10.1364/OE.23.021819

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate the spectral beam combining of a diode laser stack, which contains three 970nm Mini-Bars along the fast-axis direction, in an external cavity. At the pump current of 60 A, the output power of 127 W, the spectral bandwidth of 12 nm and the Electro-optical conversion efficiency of 48.35% are achieved. The measured beam qualities after the spectral beam combining are M-2 = 10.2 along the slow axis and M-2 = 11.5 along the fast axis. Under a maximum injection current of 75A, the laser output power of more than 159W is achieved. The beam quality deteriorated slightly with the rising of the current from 60A to 75A, but it is enough to be coupled into a 50 mu m core / 0.22NA fiber. (C) 2015 Optical Society of America

引用

页码：21819 / 21824

页数：6

共 12 条

[1] Goals and status of the German national research initiative BRIOLAS (brilliant diode lasers) [J].