NARROWING OF THE INTERSUBBAND ELECTROLUMINESCENT SPECTRUM IN COUPLED-QUANTUM-WELL HETEROSTRUCTURES

被引：68
作者：
FAIST, J
CAPASSO, F
SIRTORI, C
SIVCO, DL
HUTCHINSON, AL
CHU, SNG
CHO, AY
机构：
[1] AT and T Bell Laboratories, Murray Hill
来源：
APPLIED PHYSICS LETTERS | 1994年 / 65卷 / 01期
关键词：
D O I：
10.1063/1.113086
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We show that the introduction of a setback between the active region and the dopants has a dramatic effect on the spectrum of quantum-well intersubband electroluminescence at cryogenic temperatures, namely a strong blue shift and narrowing of the emission line. This is accompanied by a change of line shape from Gaussian to Lorentzian. A remarkable electric-field induced narrowing of the electroluminescent spectrum down to a width of 21 meV is also observed.
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页码：94 / 96
页数：3
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