Distributed-Feedback Quantum-Cascade Lasers at 9 μm Operating in Continuous Wave Up to 423 K

被引：56

作者：

Wittmann, Andreas ^{[1
]}

Bonetti, Yargo ^{[1
]}

Fischer, Milan ^{[1
]}

Faist, Jerome ^{[1
]}

Blaser, Stephane ^{[2
]}

Gini, Emilio ^{[3
]}

机构：

[1] ETH, Inst Quantum Elect, CH-8093 Zurich, Switzerland

[2] Alpes Lasers SA, CH-2000 Neuchatel, Switzerland

[3] ETH, Ctr Micro & Nanosci 1, CH-8093 Zurich, Switzerland

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2009年 / 21卷 / 9-12期

基金：

瑞士国家科学基金会;

关键词：

Continuous wave (CW); distributed feedback (DFB); quantum-cascade (QC) laser; single-mode;

D O I：

10.1109/LPT.2009.2019117

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：

Single-mode lasers operating at lambda approximate to 9 mu m in continuous wave up to 423 K (150 degrees C) were achieved by the combination of strong distributed-feedback coupling, a narrow gain active region design, low intersubband, and free-carrier losses as well as a good thermal management. Tuning of 10 cm(-1) or 0.9% of the center frequency was achieved by heating the device. The threshold current density varies from 1.1 kA/cm(2) at 303 K to 2.4 kA/cm(2) at 423 K. Other devices with low electrical power consumption of 1.6 and 3.8 W for an optical output power of 16 and 100 mW have been demonstrated at 263 K.

引用

页码：814 / 816

页数：3

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