钾原子4p能级Autler-Townes分裂的相干控制  

Coherent Control of Autler-Townes Doublet of the Photoelectron Spectra of K Atom at 4p State

作　　者：刘碧蕊[1] 伏振兴[1] 丁瑜[2] 

机构地区：[1]宁夏师范学院物理与信息技术系,宁夏固原756000 [2]陕西师范大学物理学与信息技术学院,陕西西安710062

出　　处：《内蒙古师范大学学报（自然科学汉文版）》2007年第3期300-303,共4页Journal of Inner Mongolia Normal University(Natural Science Edition)

摘　　要：用缀饰态理论研究了延迟双脉冲作用下钾原子4p能级的粒子布局特征,得出缀饰态粒子布局几率与脉冲强度、延迟时间之间的关系,进而讨论当第一个脉冲面积为0.5π时,脉冲间延迟时间与4p能级Autler-Townes分裂的关系.选择合适的延迟时间可实现粒子在4p能级缀饰态的选择布局,从而控制Autler-Townes分裂.Population of the 4p state of K atom was studied theoretically by means of dressed states theory when a sequence of two laser pulses is used to excite K atom from the 4s to the 4p state. Relationships of the population of the dressed states and area of the first pulse and delay time between two pulses were obtained. Then the relationship between Autler-Townes doublet and the delay time was investigated by using the formula attained. It is shown that Autler-Townes doublet of the 4p state can be controlled by the delay time between the two pulses selecting the population of the dressed state, because of the delay time and the area of the first pulse which has a fixed value equal to 0.5π.

关 键 词：延迟脉冲 粒子选择布局 缀饰态理论 Autler-Townes分裂 

分 类 号：O437.2[机械工程—光学工程]