VERTICAL TRANSITION QUANTUM CASCADE LASER WITH BRAGG CONFINED EXCITED-STATE

被引：196
作者：
FAIST, J
CAPASSO, F
SIRTORI, C
SIVCO, DL
HUTCHINSON, AL
CHO, AY
机构：
[1] ATandT Bell Laboratories, Murray Hill
来源：
APPLIED PHYSICS LETTERS | 1995年 / 66卷 / 05期
关键词：
D O I：
10.1063/1.114005
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A new midinfrared (λ∼4.5 μm) intersubband quantum cascade laser based on a vertical transition is reported. A superlattice graded gap region was incorporated in the design to provide strong electron confinement in the upper state using a Bragg reflector. Pulsed operation at 100 K is reported with a threshold current density of Jth=3 kA/cm2 and a measured slope efficiency of 300 mW/A. © 1995 American Institute of Physics.
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页码：538 / 540
页数：3
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