Improved CW operation of quantum cascade lasers with epitaxial-side heat-sinking

被引：90

作者：

Gmachl, C ^{[1
]}

Sergent, AM ^{[1
]}

Tredicucci, A ^{[1
]}

Capasso, F ^{[1
]}

Hutchinson, AL ^{[1
]}

Sivco, DL ^{[1
]}

Baillargeon, JN ^{[1
]}

Chu, SNG ^{[1
]}

Cho, AY ^{[1
]}

机构：

[1] Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 1999年 / 11卷 / 11期

关键词：

epilayer-side mounting; mid-infrared; semiconductor device heat-sinking; unipolar semiconductor laser;

D O I：

10.1109/68.803048

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：

First results on the epilayer-side mounting of quantum cascade (QC) lasers are presented. Operated;in continuous-wave (CW) mode, these lasers are superior to substrate-bonded devices. The maximum CW temperature is raised by 20 K (up to 175 K), and, at comparable heat sink temperatures, the performance with respect to threshold current, output power, and slope efficiency is greatly improved for the epilayer-side mounted devices. QC-laser-specific mounting procedures are discussed in this letter, such as the high reflectivity coating of the back-facet and the front-facet cleaving after mounting, Modeling of the temperature distribution inside the QC laser shows a strong temperature gradient within the active waveguide core, which partly explains the still low maximum CW operating temperatures.

引用

页码：1369 / 1371

页数：3

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