Room temperature quantum cascade lasers with 27% wall plug efficiency

被引：313

作者：

Bai, Y. ^{[1
]}

Bandyopadhyay, N. ^{[1
]}

Tsao, S. ^{[1
]}

Slivken, S. ^{[1
]}

Razeghi, M. ^{[1
]}

机构：

[1] Northwestern Univ, Dept Elect Engn & Comp Sci, Ctr Quantum Devices, Evanston, IL 60208 USA

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 18期

关键词：

D O I：

10.1063/1.3586773

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Using the recently proposed shallow-well design, we demonstrate InP based quantum cascade lasers (QCLs) emitting around 4.9 mu m with 27% and 21% wall plug efficiencies in room temperature (298 K) pulsed and continuous wave (cw) operations, respectively. The laser core consists of 40 QCL-stages. The highest cw efficiency is obtained from a buried-ridge device with a ridge width of 8 mu m and a cavity length of 5 mm. The front and back facets are antireflection and high-reflection coated, respectively. The maximum single facet cw power at room temperature amounts to 5.1 W. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3586773]

引用

页数：3

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