Self-heating effect in 1.3 μm p-doped InAs/GaAs quantum dot vertical cavity surface emitting lasers

被引:4
作者
Xu, D. W. [1 ]
Tong, C. Z. [1 ]
Yoon, S. F. [1 ]
Zhao, L. J. [2 ]
Ding, Y. [1 ]
Fan, W. J. [1 ]
机构
[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
[2] Chinese Acad Sci, Inst Semicond, Key Lab Semicond Mat Sci, Beijing 100083, Peoples R China
关键词
gallium arsenide; III-V semiconductors; indium compounds; quantum dot lasers; surface emitting lasers; DEPENDENT OUTPUT CHARACTERISTICS; VCSELS; WELL; CONFINEMENT; POWER;
D O I
10.1063/1.3309954
中图分类号
O59 [应用物理学];
学科分类号
摘要
The self-heating effect in 1.3 mu m p-doped InAs/GaAs quantum dot (QD) vertical cavity surface emitting lasers (VCSELs) has been investigated using a self-consistent theoretical model. Good agreement is obtained between theoretical analysis and experimental results under pulsed operation. The results show that in p-doped QD VCSELs, the output power is significantly influenced by self-heating. About 60% of output power is limited by self-heating in a device with oxide aperture of 5x6 mu m(2). This value reduces to 55% and 48%, respectively, as the oxide aperture increases to 7x8 and 15x15 mu m(2). The temperature increase in the active region and injection efficiency of the QDs are calculated and discussed based on the different oxide aperture areas and duty cycle.
引用
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页数:6
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