偏振光激发的Sr原子电偶极辐射  

Electric Dipole Radiation of Sr Atoms Induced by Polarized Light Field

作　　者：吴慧[1,2] 赵亚楠[1,2] 常宏[1] 张首刚[1] 

机构地区：[1]中国科学院国家授时中心,陕西西安710600 [2]中国科学院研究生院,北京100039

出　　处：《量子光学学报》2009年第3期248-252,共5页Journal of Quantum Optics

基　　金：中科院重要方向项目(KJCX2-YW-T12);国家973项目(2005CB724401)

摘　　要：原子与激光场相互作用产生的自发辐射可以用经典电偶极辐射理论很好的描述。通过改变与Sr原子束相互作用激光的偏振方向,分析探测Sr原子束荧光强度的变化,测定了在远场区的电偶极辐射特性。Sr原子电偶极子在远场区辐射能量的空间方向分布满足sin2θ关系,利用这一规律可以有效地探测到最强的荧光光谱。The atomic fluorescence can be explained perfectly by the classical theories of electric dipole radiation. The changes of fluorescence intensity of Sr atomic beam are detected and analysed by changing the polarization of the laser beam which interacts with Sr atomic beam, and the characterization of the electric dipole radiation of Sr atom is detected in the far zone. It is experimentally demonstrated that the electric dipole radiates energy in the far zone is based upon the relationship of sin20, by which the fluorescence can be detected more effectively.

关 键 词：Sr原子 电偶极辐射 偏振光 荧光光谱 

分 类 号：O431[机械工程—光学工程]