Na原子双光子跃迁  

Two-photon Transitions in Sodium

作　　者：方允[1] 席丽霞[2] 

机构地区：[1]韶关大学物理系,韶关512005 [2]北京师范大学物理系,北京100875

出　　处：《韶关大学学报》1997年第2期49-54,共6页

摘　　要：本文讨论实现Na原子双光子跃迁的理论依据和实验技术。根据微扰论导得双光子跃迁几率与激光场强四次方成正比，分析了提高跃迁几率、增强非线性光学效应的措施，确定了Na原子采取近4D能级双光子共振实验方向，解决实验中的相位匹配问题，给出了部分实验结果。Both the theory and the experimental technique about the two-photon trasitions in sodium were discussed. By the perturbation theory it came to the conclution that the probability of two-photon processes varies directly as the four power of incident laser field intensity. At the same time, the enhances of the probability and the third nonlinear susceptibility were analyzed. The paper established the conditions of the experiment that based on the near 4D two-photon resonance. The phase-matched on the experiment had been solved. In final section, a parts of the spectrum gotten from the experiment were exhibited.

关 键 词：双光子跃迁 三阶非线性极化率 双光子共振增强 相位匹配 参量四波混频 

分 类 号：O562.4[理学—原子与分子物理]