Gain-switching dynamics in optically pumped single-mode InGaN vertical-cavity surface-emitting lasers

被引：10
|
作者：
Chen, Shaoqiang [1 ]
Asahara, Akifumi [1 ]
Ito, Takashi [1 ]
Zhang, Jiangyong [2 ]
Zhang, Baoping [2 ]
Suemoto, Tohru [1 ]
Yoshita, Masahiro [1 ]
Akiyama, Hidefumi [1 ]
机构：
[1] Univ Tokyo, ISSP, Kashiwa, Chiba 2778581, Japan
[2] Xiamen Univ, Dept Elect Engn, Xiamen 361005, Fujian, Peoples R China
来源：
OPTICS EXPRESS | 2014年 / 22卷 / 04期
基金：
日本学术振兴会;
关键词：
STORAGE; MEMORY;
D O I：
10.1364/OE.22.004196
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The gain-switching dynamics of single-mode pulses were studied in blue InGaN multiple-quantum-well vertical-cavity surface-emitting lasers (VCSELs) through impulsive optical pumping. We measured the shortest single-mode pulses of 6.0 ps in width with a method of upconversion, and also obtained the pulse width and the delay time as functions of pump powers from streak-camera measurements. Single-mode rate-equation calculations quantitatively and consistently explained the observed data. The calculations indicated that the pulse width in the present VCSELs was mostly limited by modal gain, and suggested that subpicosecond pulses should be possible within feasible device parameters. (C) 2014 Optical Society of America
引用
收藏
页码：4196 / 4201
页数：6
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