High-power continuous-wave operation of quantum-cascade lasers up to 60 °C

被引：52

作者：

Yu, JS ^{[1
]}

Evans, A ^{[1
]}

David, J ^{[1
]}

Doris, L ^{[1
]}

Slivken, S ^{[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：

cavity length; continuous wave (CW); high-temperature operation; mid-infrared; quantum-cascade lasers (QCLs); quantum wells;

D O I：

10.1109/LPT.2004.823686

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：

High-temperature high-power continuous-wave (CW) operation of high-reflectivity-coated 12-mum-wide quantum-cascade lasers emitting at lambda = 6 mum with a thick electroplated An top contact layer is reported for different cavity lengths. For a 3-mm-long laser, the CW optical output powers of 381 mW at 293 K and 22 mW at maximum operating temperature of 333 K (60 degreesC) are achieved with threshold current densities of 1.93 and 3.09 kA/cm(2), respectively. At 298 K, the same cavity gives a maximum wall plug efficiency of 3.17% at 1.07 A. An even higher CW optical output power of 424 mW at 293 K is obtained for a 4-mm-long laser and the device also operates up to 332 K with an output power of 14 mW. Thermal resistance is also analyzed at threshold as a function of cavity length.

引用

页码：747 / 749

页数：3

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