量子电子学报, 2004, 21 (4): 429, 网络出版: 2006-05-15
非对称量子阱中线性和三阶非线性光吸收系数的研究
Study on linear and third-order nonlinear optical absorption in special asymmetric quantum wells
非线性光学 非线性光吸收系数 非对称量子阱 密度矩阵方法 nonlinear optics nonlinear optical absorption asymmetric quantum well density matrix method
摘要
主要研究了一个特殊非对称量子阱中的线性和三阶非线性光吸收系数.首先利用量子力学中的密度矩阵算符理论和迭代方法导出了线性和三阶非线性光吸收系数的表达式,然后以典型的非对称量子阱GaAs/AlGaAs材料为例作了数值计算.数值结果表明,入射光强以及系统的非对称性对总的光吸收系数有比较大的影响,从而为实验研究提供理论依据.
Abstract
Authors give a detailed procedure for the calculation of the linear and third-order nonlinear optical absorption in special asymmetric quantum wells. It is obtained an analytic formula for the optical absorption by the compact density matrix method and the iterative procedure. Finally, the numerical results are presented for typical GaAs/AlGaAs asymmetric quantum wells. The numerical results show that the incident optical intensity and the asymmetry of the quantum wells have great influences on the optical absorption.
王光辉, 郭康贤, 郭旗. 非对称量子阱中线性和三阶非线性光吸收系数的研究[J]. 量子电子学报, 2004, 21(4): 429. 王光辉, 郭康贤, 郭旗. Study on linear and third-order nonlinear optical absorption in special asymmetric quantum wells[J]. Chinese Journal of Quantum Electronics, 2004, 21(4): 429.