光磁共振实验中异常光抽运信号的深入探讨  

Abnormal optical pumping signals in optical-magnetic resonance experiment

作　　者：周健[1] 俞熹[1] 王煜[1] 

机构地区：[1]复旦大学物理系,上海200433

出　　处：《物理实验》2009年第4期1-5,10,共6页Physics Experimentation

基　　金：国家基础科学人才培养基金资助(No.J0730310)

摘　　要：利用改装的DH807光磁共振实验仪,直接观察了铷泡处磁场的变化.由于电感的作用,真实的磁场变化与外源扫场波形有很大区别.定量地测量了光抽运弛豫饱和值与磁场的关系,研究了抽运波形随磁场变化周期的关系,并探讨了未完全抵消的垂直磁场对光抽信号运幅度的影响,分析了方波和三角波扫场时遇到的异常光抽运信号的成因.With the improved DH807 optical-magnetic resonance apparatus, the change of the magnetic field in the Rb vapor bulb is directly observed. Because of the inductance of the coil, there is difference between the change of the real magnetic field and external scanning voltage. The relation between the Rb vapor＇s saturated absorption rate and the magnetic field is quantitatively measured, the relation between the shape of optical pumping signal and period of magnetic field is studied. The influence of the un-offseted vertical magnetic field on the optical pumping signals is discussed, and all the abnormal optical pumping signals during the expriment are explained.

关 键 词：光磁共振 壁弛豫过程 弛豫饱和值 光抽运信号 

分 类 号：O482.531[理学—固体物理]