Room-temperature continuous-wave metal grating distributed feedback quantum cascade lasers

被引：51
作者：
Carras, M. [1 ]
Maisons, G. [1 ]
Simozrag, B. [1 ]
Garcia, M. [1 ]
Parillaud, O. [1 ]
Massies, J. [1 ]
Marcadet, X. [1 ]
机构：
[1] Alcatel Thales III V Lab, F-91767 Palaiseau, France
来源：
APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 16期
关键词：
LAMBDA-SIMILAR-TO-4.8; MU-M; OPERATION;
D O I：
10.1063/1.3399779
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on the design and elaboration of continuous wave (cw) distributed feedback quantum cascade lasers (QCLs) using a simple metal grating approach without epitaxial regrowth, neither for the grating nor for the thermal extraction. Room temperature cw single monomode QCLs with 30 dB side mode suppression ratio are demonstrated down to 4.5 mu m with 20 mW output power and threshold of 1.5 kA cm(-2). The beam quality factor (M(2)) does not exceed 1.22 for both axes. These results are discussed and the key issue of thermal management of the device is emphasized. c 2010 American Institute of Physics. [doi: 10.1063/1.3399779]
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页数：3
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