Tuning a distributed feedback laser with a coupled microcavity.
Tuning a distributed feedback laser with a coupled microcavity.
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调谐具有耦合微腔的分布式反馈激光器。
DOI：
10.1364/oe.18.019185
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发表时间：
2010
期刊：
影响因子：
3.8
通讯作者：
D. Ritchie
中科院分区：
文献类型：
--
作者：
L. Mahler;A. Tredicucci;F. Beltram;H. Beere;D. Ritchie
我们证明了分布反馈的太赫兹量子级联激光器可以通过各自特征频率的反交叉来与耦合微腔调谐。在这个概念验证实验中，得到了一个20 GHz的调谐范围，与一个简单的有限元模型很好地吻合，这表明调谐是由谐振腔之间的耦合强度决定的。这个概念可以应用于任何激光腔，但发射频率越低，吸引力就越大。
We show that a distributed-feedback terahertz quantum cascade laser can be tuned with a coupled microcavity by anti-crossing of the respective eigenfrequencies. In this proof-of-concept experiment, a tuning range of 20 GHz is obtained, in good agreement with a simple finite element model, which shows that the tuning is determined by the coupling strength between the resonators. The concept could be applied to any laser cavity, but becomes progressively more attractive the lower the emission frequency.