Terahertz electroluminescence from superlattice quantum cascade structures

被引：15

作者：

Colombelli, R ^{[1
]}

Straub, A ^{[1
]}

Capasso, F ^{[1
]}

Gmachl, C ^{[1
]}

Blakey, MI ^{[1
]}

Sergent, AM ^{[1
]}

Chu, SNG ^{[1
]}

West, KW ^{[1
]}

Pfeiffer, LN ^{[1
]}

机构：

[1] Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2002年 / 91卷 / 06期

关键词：

D O I：

10.1063/1.1448393

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Intersubband electroluminescence is reported in a quantum-cascade structure based on asymmetric superlattice active regions and designed for emission in the THz range (lambdaapproximate to80 mum). Comparison with a structure based on a "vertical transition" in a single quantum well shows an increased full width at half maximum (2.8 vs 0.9 meV) of the emission line. In both cases the dependence of the optical power on the injected current is linear or sublinear and remains in the pW range. (C) 2002 American Institute of Physics.

引用

页码：3526 / 3529

页数：4

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