量子电子学报2007，Vol.24Issue(1)：80-84,5.
双曲型量子阱中非线性光学吸收率的计算
Intersubband optical absorption in hyperbolic quantum wells
摘要
Abstract
The problem of optical saturation of intersubband absorption has attracted considerable attention recently. The problem is very important to the development of superlattice devices such as fast infrared detectors and modulators because one needs to know the range of input optical intensities for which linear operation is possible. The linear and the third-order nonlinear optical intersubband absorption coefficients in hyperbolic quantum wells are studied, where emphasis is devoted to the influence of the shape of the wells on the absorption coefficients. The analytic forms for the linear and the third-order nonlinear optical intersubband absorption coefficients are derived by means of the density matrix formalism taking into account the intrasubband relaxation. Finally,the numerical results show that the optical absorption coefficients depend on the shape of the wells,the tunnel bandwith and the optical intensity.关键词
非线性光学/双曲型量子阱/吸收系数/密度矩阵方法Key words
nonlinear optics/hyperbolic quantum wells/absorption coefficients/density matrix approach分类
数理科学引用本文复制引用
谭鹏,路洪..双曲型量子阱中非线性光学吸收率的计算[J].量子电子学报,2007,24(1):80-84,5.基金项目
Support by the Natural Science Foundation of Educational Department of Guangdong Province (06029431) （06029431）
