开放的ladder型系统中原子响应的时间演化  

Time Evolution of Atomic Response in an Open Ladder-type System

作　　者：田淑芬[1] 张郡亮[2] 白成杰[1] 樊锡君[3] 

机构地区：[1]山东师范大学现代教育技术研究所,山东济南250014 [2]衡水师专物理系,河北衡水053000 [3]山东师范大学物理系,山东济南250014

出　　处：《光电子．激光》2003年第10期1085-1089,共5页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(69978011);山东省自然科学基金资助项目(Y2001A07)

摘　　要：研究发现:驱动场Rabi频率的变化将不改变各原子响应量时间演化中是否振荡的特点及达到稳态值所需时间,但将改变振荡频率及稳态值的大小;非相干泵浦速率的增加不改变各原子响应量的振荡频率但使其振荡次数减少、振幅减小及达到稳定值的时间缩短,但各原子响应量的稳态值不随非相干泵浦速率的增加而单调地增加或减小;初始条件的变化并不改变原子响应的时间演化规律及达到稳定态时各原子响应量的取值。Under the conditions of the rotatingwave,slowly varying envelope approximations.It was found that Variation of the driving field Rabi frequency doesn′t vary the oscillation (or nonoscillation) characteristic of the atomic response time evolution and the time needed for reaching to steady state,but will vary size of the oscillation frequency and steady value;increase of incoherent pumping rate doesn′t vary the oscillation frequency and steady value,but will make oscillation times decreasing,oscillation amplitude reducing,time needed for reaching to steady value shorting,however,the steady value of each atomic response doesn′t increase or decrease monotonously with incoherent pumping rate increasing;variation of initial condition of the system doesn′t vary the law of time evolution of atomic response and the steady value of each atomic response.

关 键 词：开放ladder系统 无粒子数反转激光 原子响应 时间演化 振荡频率 

分 类 号：O431.2[机械工程—光学工程] O432.12[理学—光学]