Quantum-cascade lasers operating in continuous-wave mode above 90 °C at λ∼5.25 μm -: art. no. 051105

被引：48
|
作者：
Evans, A [1 ]
Nguyen, J [1 ]
Slivken, S [1 ]
Yu, JS [1 ]
Darvish, SR [1 ]
Razeghi, M [1 ]
机构：
[1] Northwestern Univ, Ctr Quantum Devices, Dept Elect & Comp Engn, Evanston, IL 60208 USA
来源：
APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 05期
关键词：
D O I：
10.1063/1.2171476
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on the design and fabrication of lambda similar to 5.25 mu m quantum-cascade lasers (QCLs) for very high temperature continuous-wave (cw) operation. Cw operation is reported up to a maximum temperature of 90 degrees C (363 K). Cw output power is reported in excess of 500 mW near room temperature with a low threshold current density of 1.4 kA/cm(2) at 298 K. Room temperature average power of over 540 mW is reported at 50% duty cycle. A high thermal conductance (G(th)) of 340 W/K cm(2) is reported for cw QCLs. A finite element thermal model is used to investigate the G(th) and maximum cw operating temperature of the QCLs. (c) 2006 American Institute of Physics.
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页码：1 / 3
页数：3
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