Nonlinear spectroscopy of barium in parallel electric and magnetic fields  

作　　者：杨海峰 高伟 成红 刘红平 

机构地区：[1]College of Physics and Electronic Information, Luoyang Normal University [2]State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences

出　　处：《Chinese Physics B》2014年第10期92-95,共4页中国物理B（英文版）

基　　金：Project supported by the National Basic Research Program of China(Grant No.2013CB922003);the National Natural Science Foundation of China(Grant Nos.11174329 and 91121005)

摘　　要：We report on the experimental spectral observations of barium in parallel electric and magnetic fields. The laser pulse is linearly polarized along or perpendicular to the fields, leading to the states m = 0 and the states m = -t-1 populated, respectively, by one photon excitation. By sweeping the electric field, we observe the linear and nonlinear splitting of the diamagnetic spectrum as the electric field increases. The spectral anticrossing is induced by the atomic core effect. The Stark spectrum also shows an obvious nonlinear quadratic behavior when the applied magnetic field varies strongly. All spectra are well explained by the full quantum calculation after taking the quantum defect effects of the channel ns up to nf into account.We report on the experimental spectral observations of barium in parallel electric and magnetic fields. The laser pulse is linearly polarized along or perpendicular to the fields, leading to the states m = 0 and the states m = -t-1 populated, respectively, by one photon excitation. By sweeping the electric field, we observe the linear and nonlinear splitting of the diamagnetic spectrum as the electric field increases. The spectral anticrossing is induced by the atomic core effect. The Stark spectrum also shows an obvious nonlinear quadratic behavior when the applied magnetic field varies strongly. All spectra are well explained by the full quantum calculation after taking the quantum defect effects of the channel ns up to nf into account.

关 键 词：Rydberg atoms Stark effect diamagnetic effect 

分 类 号：O437[机械工程—光学工程]