中国物理B ›› 2012, Vol. 21 ›› Issue (9): 94209-094209.doi: 10.1088/1674-1056/21/9/094209

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Tunnel regenerated coupled multi-active-region large optical cavity laser with high quality beam

崔碧峰, 郭伟玲, 杜晓东, 李建军, 邹德恕, 沈光地   

  1. Key Laboratory of Opto-electronics Technology of Ministry of Education, Beijing University of Technology, Beijing 100124, China
  • 收稿日期:2011-09-23 修回日期:2011-11-14 出版日期:2012-08-01 发布日期:2012-08-01
  • 基金资助:
    Project supported by the State Key Development Program for Basic Research of China (Grant No. G20000863-02) and the Natural Science Foundation of Beijing, China (Grant No. 4032007).

Tunnel regenerated coupled multi-active-region large optical cavity laser with high quality beam

Cui Bi-Feng (崔碧峰), Guo Wei-Ling (郭伟玲), Du Xiao-Dong (杜晓东), Li Jian-Jun (李建军), Zou De-Shu (邹德恕), Shen Guang-Di (沈光地)   

  1. Key Laboratory of Opto-electronics Technology of Ministry of Education, Beijing University of Technology, Beijing 100124, China
  • Received:2011-09-23 Revised:2011-11-14 Online:2012-08-01 Published:2012-08-01
  • Contact: Cui Bi-Feng E-mail:cbf@bjut.edu.cn
  • Supported by:
    Project supported by the State Key Development Program for Basic Research of China (Grant No. G20000863-02) and the Natural Science Foundation of Beijing, China (Grant No. 4032007).

PDF (PC)

843

赞

摘要： A novel coupled multi-active-region large optical cavity structure cascaded by tunnel junction is proposed to solve the problems of catastrophic optical damage (COD) of facet and large vertical divergence caused by the thin emitting area in the conventional laser diode. For the 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/cm2 are achieved. By optimizing the structure parameters, the beam quality is greatly improved, and the level of COD power increases more than two times compared with that of the conventional laser.

关键词: large cavity, vertical divergence angle, catastrophic optical damage, beam quality

Abstract: A novel coupled multi-active-region large optical cavity structure cascaded by tunnel junction is proposed to solve the problems of catastrophic optical damage (COD) of facet and large vertical divergence caused by the thin emitting area in the conventional laser diode. For the 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/cm2 are achieved. By optimizing the structure parameters, the beam quality is greatly improved, and the level of COD power increases more than two times compared with that of the conventional laser.

Key words: large cavity, vertical divergence angle, catastrophic optical damage, beam quality

中图分类号:  (Semiconductor lasers; laser diodes)

  • 42.55.Px
42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation)