原子质心运动对二能级原子发射谱的影响  

The effect of mass center motion on a two-level atom emission spectrum

作　　者：郭红[1] 赵丽艳[1] 

机构地区：[1]华中师范大学物理科学与技术学院

出　　处：《物理学报》2005年第10期4723-4729,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:60478049;10204009)资助的课题.~~

摘　　要：研究了质心做谐振运动的二能级原子的发射谱.当原子质心运动与光场无关联时,原子质心运动不影响原子发射谱的相位敏感性,随着原子质心运动平均能量的增加,原子发射谱峰间的相对距离变小,峰高的变化与原子质心运动和光场所处的状态有关.当原子质心运动与光场有关联时,原子发射谱不依赖于光场与原子偶极矩的相对相位,在适当条件下原子发射谱峰的数目减少,峰高增大,峰宽变小.The emission spectrum of a two-level atom in a harmonic trap is studied. It is shown that atomic motion do not affect the atomic spectrum phase sensitivity when there is no correlation between atomic mass center motion and the field. With the increase of the average energy of atomic center motion, the peaks move towards each other, their heights change with the state of the field and atomic motion. When there is correlation between atomic mass center motion and the field, the atomic spectrum becomes insensitive to the relative phase between the field and the atomic dipole. Under certain conditions, there are fewer peaks, and they become higher and narrower.

关 键 词：原子质心运动 二能级原子 原子发射谱 SU(2)相干态 发射谱 原子发射 相对相位 原子偶极矩 平均能量 光场 

分 类 号：O562.3[理学—原子与分子物理]