Mid/far-infrared photodetectors based on quantum coherence in coupled quantum wells

被引：3

作者：

Wojcik, Aleksander K. ^{[1
]}

Xie, Feng ^{[1
]}

Chaganti, V. R. ^{[1
]}

Belyanin, Alexey ^{[1
]}

Kono, Junichiro ^{[2
]}

机构：

[1] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA

[2] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77251 USA

来源：

JOURNAL OF MODERN OPTICS | 2008年 / 55卷 / 19-20期

关键词：

infrared; photodetector; frequency up-conversion; coupled quantum wells; semiconductor heterostructures;

D O I：

10.1080/09500340802357315

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose mid/far-infrared photodetectors based on coherent sum-frequency generation in a near-resonant cascade of interband and intersubband transitions in high optical nonlinearity asymmetric quantum well structures. Such structures can yield high detectivity and responsivity in the bandwidth of the order of 30% of a central frequency in the mid-infrared range. Resonant up-conversion detectors can be designed for both collinear and perpendicular pump and signal beams. They can be integrated with semiconductor pump lasers to yield compact devices. We present specific device designs based on GaAs/AlGaAs and InGaAs/AlInAs heterostructures and calculate their expected figures of merit.

引用

页码：3305 / 3317

页数：13

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