陕西师范大学学报：自然科学版2011，Vol.39Issue(6)：27-30,4.
拉曼共振四能级原子系统中的有效交叉Kerr非线性
Effective cross-Kerr nonlinearity in a Raman resonant of four-level atom
摘要
Abstract
A theoretical investigation is put forward for obtaining effective cross-Kerr nonlinearity of the four-level atom interacting with three electromagnetic fields.Using density-matrix equations and perturbation iterative method,the variation dependence of the third-order susceptibility on the detunings of the applied electromagnetic fields is derived.The results show that a large cross-Kerr nonlinearity can be generated when the detunings of the two weak probe fields are Raman resonant,and the corresponding linear susceptibility and self-Kerr interactions vanish.The realization of the effective Kerr nonlinearity with vanishing absorption is possible in a Raman resonant four-level system.关键词
非线性光学/三阶极化率/交叉Kerr非线性/拉曼共振Key words
nonlinear optics/the third-order susceptibility/cross-Kerr nonlinearity/Raman resonant分类
数理科学引用本文复制引用
王利强,查新未,李永放..拉曼共振四能级原子系统中的有效交叉Kerr非线性[J].陕西师范大学学报：自然科学版,2011,39(6):27-30,4.基金项目
国家自然科学基金资助项目 （）
