A tunnel regenerated coupled multi-active-region large optical cavity laser with a high quality beam

被引：0
|
作者：
崔碧峰 [1 ]
郭伟玲 [1 ]
杜晓东 [1 ]
李建军 [1 ]
邹德恕 [1 ]
沈光地 [1 ]
机构：
[1] Key Laboratory of Opto-electronics Technology of Ministry of Education, Beijing University of Technology
来源：
Chinese Physics B | 2012年 / 21卷 / 09期
关键词：
large cavity; vertical divergence angle; catastrophic optical damage; beam quality;
D O I：
暂无
中图分类号：
TN248 [激光器];
学科分类号：
0803 ; 080401 ; 080901 ;
摘要：
A novel coupled multi-active-region large optical cavity structure cascaded by a tunnel junction is proposed to solve the problems of facet catastrophic optical damage (COD) and the large vertical divergence caused by the thin emitting area in conventional laser diodes. For a laser with three active regions, a slope efficiency as high as 1.49 W/A, a vertical divergence angle of 17.4 , and a threshold current density of 271 A/cm 2 are achieved. By optimizing the structural parameters, the beam quality is greatly improved, and the level of the COD power increases by more than two times compared with that of the conventional laser.
引用
收藏
页码：305 / 308
页数：4
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