Mid-infrared interband cascade lasers with quantum efficiencies >200%

被引：75
|
作者：
Yang, BH [1 ]
Zhang, D
Yang, RQ
Lin, CH
Murry, SJ
Pei, SS
机构：
[1] Univ Houston, Ctr Space Vacuum Epitaxy, Houston, TX 77204 USA
[2] QET, Houston, TX USA
来源：
APPLIED PHYSICS LETTERS | 1998年 / 72卷 / 18期
关键词：
D O I：
10.1063/1.121265
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
An external differential quantum efficiency exceeding 200% has been observed from 4 mu m InAs/ InGaSb/AlSb interband cascade lasers under 1 mu s pulses and 0.1% duty cycle at 80 K. By increasing the pulse lengths and the repetition rates, average powers >16 mW have been measured with 5 mu s pulses at 10% duty cycle, the internal quantum efficiency and the internal loss are determined to be 220% and 14 cm(-1), respectively. (C) 1998 American Institute of Physics.
引用
收藏
页码：2220 / 2222
页数：3
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