摘要
用紧致密度矩阵和弛豫时间近似方法,研究退极化效应对三次谐波产生的影响．给出三次谐波产生系数表达式．在半抛物量子阱中,给出三次谐波产生的数值结果．退极化效应破坏了三共振,修改了三次谐波产生谱．使原来的三共振峰退化为一双共振峰和一单共振峰．
The influence of the depolarization effect on the third-harmonic generation spectrum in an asymmetric semi-parabolic quantum well is studied. A concise formulation of the thirdharmonic generation is presented. The calculation of a semi-parabolic quantum well shows that triply resonance is destroyed by the depolarization effect and original triply resonance peak is replaced by one double resonance and one single peak.
出处
《量子电子学报》
CAS
CSCD
北大核心
2007年第3期361-364,共4页
Chinese Journal of Quantum Electronics
关键词
非线性光学
三次谐波产生
紧致密度矩阵
退极化效应
半抛物量子阱
nonlinear optics
third-harmonic generation
compact density-matrix
depolarization effect
semi-parabolic quantum well
