Feedback stabilization of quantum cascade laser beams for stand-off applications

被引：2
|
作者：
Mueller, Reik [1 ]
Kendziora, Christopher A. [2 ]
Furstenberg, Robert [2 ]
机构：
[1] BAAINBw, Ferdinand Sauerbruch Str 1, D-56073 Koblenz, Germany
[2] Naval Res Lab, Code 6365,4555 Overlook Ave SW, Washington, DC 20375 USA
来源：
MICRO- AND NANOTECHNOLOGY SENSORS, SYSTEMS, AND APPLICATIONS IX | 2017年 / 10194卷
关键词：
Stand-off detection; QCL tuning; infrared detection; position stabilizing; real time control; electro-optical feedback loop;
D O I：
10.1117/12.2262202
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Techniques which apply tunable quantum cascade lasers (QCLs) for target illumination suffer from fluctuations of the laser beam direction. This manuscript describes a method to stabilize the beam direction by using an active feedback loop. This approach corrects and stabilizes the laser pointing direction using the signal from a 4-element photo sensor as input to control an active 2 dimensional Galvo mirror system. Results are presented for measurements using known perturbations as well as actual mode hops intrinsic to external cavity QCL during wavelength tuning.
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收藏
页数：13
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