Surface plasmon waveguides with gradually doped or NiAl intermetallic compound buried contact for terahertz quantum cascade lasers

被引：8

作者：

Indjin, D ^{[1
]}

Ikonic, Z ^{[1
]}

Harrison, P ^{[1
]}

Kelsall, RW ^{[1
]}

机构：

[1] Univ Leeds, Sch Elect & Elect Engn, Leeds LS2 9JT, W Yorkshire, England

来源：

JOURNAL OF APPLIED PHYSICS | 2003年 / 94卷 / 05期

关键词：

D O I：

10.1063/1.1599630

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Improved designs of surface plasmon waveguides for use in GaAs/AlGaAs terahertz quantum cascade lasers are presented. Modal losses and confinement factors are calculated for TM modes in metal-variably doped multilayer semiconductor and metal-intermetallic compound layer clad structures and compared with those obtained in recently realized metal-highly doped semiconductor clad layer structures. Considerable improvements of the mode confinement factors are predicted, and guidelines for choosing the confinement layer parameters are given. (C) 2003 American Institute of Physics.

引用

页码：3249 / 3252

页数：4

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