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LINEAR AND NONLINEAR INTERSUBBAND REFRACTIVE INDEX CHANGES IN WURTZITE AlGaN/GaN DOUBLE QUANTUM WELLS: EFFECTS OF PIEZOELECTRICITY AND SPONTANEOUS POLARIZATION

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Author Info
L. ZHANG () (Department of Mechanism and Electronics, Panyu Polytechnic, Panyu, 511483, P. R. China)
Abstract

Based on the density-matrix approach and iterative treatment, a detailed procedure for the calculation of the linear and nonlinear intersubband refractive index changes (RICs) in wurtzite GaN-based coupling quantum wells (CQWs) is given. The simple analytical formulas for electronic eigenstates and the linear and third-order nonlinear RICs in the systems are also deduced. Numerical result on a typical AlGaN/GaN CQW shows that the linear and nonlinear RICs sensitively depend on the structural parameters of the CQW system as well as the doped fraction of nitride semicondutor.

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Article provided by World Scientific Publishing Co. Pte. Ltd. in its journal Surface Review and Letters.

Volume (Year): 16 (2009)
Issue (Month): 01 ()
Pages: 11-17
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Handle: RePEc:wsi:srlxxx:v:16:y:2009:i:01:p:11-17

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Related research
Keywords: Double quantum wells; piezoelectricity and spontaneous polarization effects; refractive index; wurtzite nitride semiconductor;

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This page was last updated on 2009-12-9.

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