Ridge-width dependence on high-temperature continuous-wave quantum-cascade laser operation

被引：40

作者：

Slivken, S ^{[1
]}

Yu, JS ^{[1
]}

Evans, A ^{[1
]}

David, J ^{[1
]}

Doris, L ^{[1
]}

Razeghi, M ^{[1
]}

机构：

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

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2004年 / 16卷 / 03期

关键词：

continuous-wave (CW) lasers; infrared measurements; quantum cascade lasers (QCLs); quantum-well lasers;

D O I：

10.1109/LPT.2004.823746

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report continuous-wave (CW) operation of quantum-cascade lasers (lambda = 6 mum) up to a temperature of 313 K (40 degreesC). The maximum CW optical output powers range from 212 mW at 288 K to 22 mW at 313 K and are achieved with threshold current densities of 2.21 and 3.11 kA/cm(2), respectively, for a high-reflectivity-coated 12-mum-wide and 2-mm-long laser. At room temperature (298 K), the power output is 145 mW at 0.87 A, corresponding to a power conversion efficiency of 1.68%. The maximum CW operating temperature of double-channel ridge waveguide lasers mounted epilayer-up on copper heatsinks is analyzed in terms of the ridge width, which is varied between 12 and 40 mum. A clear trend of improved performance is observed as the ridge narrows.

引用

页码：744 / 746

页数：3

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