摘要
以微扰论证明，并以Na原子4D—4P—3S路径参量四波混频辐射的增益和实验结果证实，双光子跃迁中间虚能级越靠近实能级，跃迁几率越大，非线性光学效应越强．
It is demonstrated that the probability of two-photon transition increases and the nonlinear optical effects is enhanced when the intermediate virtual state closes to the true one on the basis of perturbation theory and according to the gain formula and the experimental conclusions of sodium parametric four wave mixing along the 4D-4P-3S pathway.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
北大核心
1997年第3期349-352,共4页
Journal of Beijing Normal University(Natural Science)
关键词
跃迁几率
双光子跃迁
非线性光学效应
能级
two-photon
nonlinear susceptibility
virtual level
transitional probability
