Superradiant emission from Bloch oscillations in semiconductor superlattices

被引：60

作者：

Martini, R ^{[1
]}

Klose, G ^{[1
]}

Roskos, HG ^{[1
]}

Kurz, H ^{[1
]}

Grahn, HT ^{[1
]}

Hey, R ^{[1
]}

机构：

[1] PAUL DRUDE INST FESTKORPERELEKT,D-10117 BERLIN,GERMANY

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.54.R14325

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The superradiant character of submillimeter-wave emission from optically excited electronic Bloch oscillations in a GaAs/AlxGa1-xAs superlattice is investigated by time-resolved terahertz emission spectroscopy. The intensity of the radiation and its decay time are studied as a function of the density of excited charge carriers. From the measured emission efficiency, the spatial amplitude of the charge oscillations is estimated.

引用

页码：14325 / 14328

页数：4

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