Midinfrared emission from coupled Wannier-Stark ladders in semiconductor superlattices

被引：8
|
作者：
Scamarcio, G [1 ]
Capasso, F [1 ]
Hutchinson, AL [1 ]
Sivco, DL [1 ]
Cho, AY [1 ]
机构：
[1] AT&T Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA
来源：
PHYSICAL REVIEW B | 1998年 / 57卷 / 12期
关键词：
D O I：
10.1103/PhysRevB.57.R6811
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Generation of midinfrared electroluminescence associated with transitions between conduction-band Wannier-Stark ladder states in strongly coupled semiconductor superlattices is reported. Both intraladder and interladder transitions, in the two regimes of strong electric-field-induced localization and resonance-induced delocalization, are observed. The difference between this incoherent spontaneous emission mechanism and the coherent spontaneous radiation from Bloch oscillations is discussed.
引用
收藏
页码：R6811 / R6814
页数：4
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