<Abstract>Based on the density matrix approach and iterative procedure,a detailed procedure for the calculation of the linear and nonlinear intersubband optical absorption coefficients is given in wurtzite GaN-b...<Abstract>Based on the density matrix approach and iterative procedure,a detailed procedure for the calculation of the linear and nonlinear intersubband optical absorption coefficients is given in wurtzite GaN-based coupling quantum wells (CQWs).The simple analytical formulas for electronic eigenstates and the linear and nonlinear optical absorption coefficients in the systems are also deduced.Numerical result on a typical AlGaN/GaN CQW shows that,the linear and nonlinear optical absorption coefficients sensitively depend on the structural parameters of the CQW system as well as the incident optics beam intensity.展开更多
基金supported by State Key Basic Research Program of China under Grant No 2006CB921607the Natural Science Foundation of Guangzhou Education Bureau under Grant No.2060
文摘<Abstract>Based on the density matrix approach and iterative procedure,a detailed procedure for the calculation of the linear and nonlinear intersubband optical absorption coefficients is given in wurtzite GaN-based coupling quantum wells (CQWs).The simple analytical formulas for electronic eigenstates and the linear and nonlinear optical absorption coefficients in the systems are also deduced.Numerical result on a typical AlGaN/GaN CQW shows that,the linear and nonlinear optical absorption coefficients sensitively depend on the structural parameters of the CQW system as well as the incident optics beam intensity.
