Optical gain of type II inter-sub-band quantum cascade lasers

被引：13

作者：

Jimenez, JL

Mendez, EE ^{[1
]}

机构：

[1] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[2] Univ Illinois, Beckman Inst, Urbana, IL 61801 USA

来源：

SOLID STATE COMMUNICATIONS | 1999年 / 110卷 / 10期

关键词：

semiconductors; heterojunctions; quantum wells; optical properties;

D O I：

10.1016/S0038-1098(99)00141-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have calculated the optical gain of inter-sub-band quantum cascade lasers based on type II heterostructures such as InAs-GaSb-AlSb, using a model that includes the whole band diagram of the structure as well as the dynamics of all the processes involved. A comparison with similar calculations for conventional type I quantum cascade lasers based on the InGaAs-InAlAs heterostructure shows the theoretical superiority of type II lasers, with an optical gain more than 50% higher than that of type I lasers and a much more efficient energy conversion. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.

引用

页码：537 / 541

页数：5

共 11 条

[1]

ESAKI L, Patent No. 5079601

[2] QUANTUM CASCADE LASER [J].