Model of a Terahertz Quantum-Cascade Laser Based on Two-Dimensional Plasmons

被引：3

作者：

Dubinov, A. A. ^{[1
,2
]}

Aleshkin, V. Ya ^{[1
,2
]}

机构：

[1] Russian Acad Sci, Inst Phys Microstruct, Nizhnii Novgorod 603950, Russia

[2] Lobachevsky State Univ Nizhny Novgorod, Nizhnii Novgorod 603950, Russia

来源：

SEMICONDUCTORS | 2021年 / 55卷 / 11期

关键词：

plasmon; quantum-cascade laser; terahertz frequency range; quantum well;

D O I：

10.1134/S1063782621100092

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The characteristics of a two-dimensional plasmon amplified in an active medium based on a terahertz quantum-cascade structure are calculated. It is shown that, for realistic parameters of GaAs/AlGaAs quantum-well structures (mobility of 2 x 10(5) cm(2) V-1 s(-1) for an electron concentration of 5 x 10(11) cm(-2) and temperatures up to 77 K), the gain experienced by two-dimensional plasmons can be as high as 1500 cm(-1) at a frequency of 2.3 THz. Furthermore, due to strong localization of the plasmon electric field near a quantum well, a quantum-cascade active region with only a few periods is sufficient for amplification.

引用

页码：828 / 830

页数：3

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