双光子共振三光子电离能级间耦合对电离的影响  

Influence of the coupling between splitted levels on ionization in two-photon resonant three-photon ionization

作　　者：丁瑜[1] 郑淮斌[1] 张艳丽[1] 伏振兴[1] 李永放[1] 

机构地区：[1]陕西师范大学物理学与信息技术学院,陕西西安710062

出　　处：《陕西师范大学学报（自然科学版）》2007年第1期45-48,共4页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：陕西省自然科学基金资助项目(2003A08)

摘　　要：应用分波展开法,通过电离态上的粒子布居,研究了电离相干现象.同时考虑到精细结构中分裂能级间的相互作用,采用nπ脉冲(n取整数或半整数),给出了电离态上粒子布居的数值模拟结果.并采用近似处理办法,得到了电离态上粒子布居受相互作用影响的解析表达形式.结果表明,双通道电离过程中不仅有两列波间的干涉,而且存在耦合作用对电离的调制.The phenomenon of ionization interference is studied with partial - wave expansion memoct through the particle population of the ionized state. Considering the interaction between splitted levels in the fine structure, the result of numerical simulation of the population in the state of ionization is given by n ：t pulses （n is integer or half-integer）, and using proper approximate treatment, the analytic expressions of the particle population affected by the coherence in the ionized state is obtained. The results show that in the process of two - channel ionization, there is not only coherence between two waves, but also the modulation of coupling toward ionization.

关 键 词：双光子共振 三光子电离 量子干涉 电离相干 

分 类 号：O431.12[机械工程—光学工程]