Short wavelength (λ ∼ 4.3 μm) high-performance continuous-wave quantum-cascade lasers

被引：35

作者：

Yu, JS ^{[1
]}

Slivken, S ^{[1
]}

Darvish, SR ^{[1
]}

Razeghi, M ^{[1
]}

机构：

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

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2005年 / 17卷 / 06期

关键词：

continuous wave (CW); high-power operation; midinfrared; quantum-cascade lasers (QCLs); quantum wells (QWs);

D O I：

10.1109/LPT.2005.846568

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 a 4.3-mu m quantum-cascade laser from 80 K to 313 K. For a high-reflectivity-coated 11-mu m-wide and 4-mm-long laser, CW output powers of 1.34 W at 80 K and 26 mW at 313 K are achieved. At 298 K, the CW threshold current density of 1.5 kA/cm(2) is observed with a CW output power of 166 mW and maximum wall-plug efficiency of 1.47%. The CW emission wavelength varies from 4.15 mu m at 80 K to 4.34 mu m at 298 K, corresponding to a temperature-tuning rate of 0.87 nm/K. The beam full-width at half-maximum values for the parallel and the perpendicular far-field patterns are 26 degrees and 49 degrees in CW mode, respectively.

引用

页码：1154 / 1156

页数：3

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