Second-harmonic generation susceptibilities of a nitride coupling quantum well: Effects of piezoelectricity and spontaneous polarization

被引：0
|
作者：
Zhang, Li [1 ]
机构：
[1] Department of Mechanics and Electronic, Panyu Polytechnic, Panyu 511483, China
来源：
Hongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves | 2007年 / 26卷 / 04期
关键词：
Additives - Electric fields - Harmonic generation - Nitrides - Piezoelectricity - Polarization;
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学科分类号：
摘要：
The second-harmonic generation (SHG) susceptibility of a wurtzite GaN/InxGa1-xN coupling quantum well (CQW) with strong built-in electric field was theoretically investigated. The calculated results reveal that the resonant SHG coefficients reach the order of magnitude of 10-7 m/V and the SHG coefficients are not monotonic functions of the well width, barrier width and the doped concentration of the CQW systems. Our results also show that a strong SHG coefficient can be obtained in the nitride CQW by choosing optimized structural parameters and doped fraction.
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