High-power CW mid-IR quantum cascade lasers

被引：0

作者：

Meyer, JR ^{[1
]}

Bewley, WW ^{[1
]}

Lindle, JR ^{[1
]}

Vurgaftman, I ^{[1
]}

Evans, AJ ^{[1
]}

Yu, JS ^{[1
]}

Slivken, S ^{[1
]}

Razeghi, M ^{[1
]}

机构：

[1] USN, Res Lab, Washington, DC 20375 USA

来源：

Quantum Sensing and Nanophotonic Devices II | 2005年 / 5732卷

关键词：

diode laser; quantum cascade laser; quantum well; mid-infrared;

D O I：

10.1117/12.597072

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We report the cw operation of quantum cascade lasers that do not require cryogenic cooling and emit at lambda = 4.7-6.2 mu m. At 200 K, more than 1 W of output power is obtained from 12-mu m-wide stripes, with a wall-plug efficiency (eta(wall)) near 10 %. Room-temperature cw operation has also been demonstrated, with a maximum output power of 640 mW (eta(wall) = 4.5 %) at 6 mu m and 260 MW (eta(wall) = 2.3 %) at 4.8 mu m. Far-field characterization indicates that whereas the beam quality remains close to the diffraction limit in all of the tested lasers, in the devices emitting at 6.2 mu m the beam tends to steer by as much as 5-10 degrees in either direction with varying temperature and pump current.

引用

页码：161 / 168

页数：8

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