Nonlinear spectroscopy of barium in parallel electric and magnetic fields

doi:10.1088/1674-1056/23/10/103201

Abstract 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=±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.

Keywords: Rydberg atoms Stark effect diamagnetic effect

Received: 21 March 2014
Revised: 11 April 2014
Accepted manuscript online:

PACS:	32.30.-r	(Atomic spectra?)
	32.60.+i	(Zeeman and Stark effects)
	03.65.Ge	(Solutions of wave equations: bound states)

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

Corresponding Authors: Liu Hong-Ping
E-mail: liuhongping@wipm.ac.cn

About author: 32.30.-r; 32.60.+i; 03.65.Ge

Cite this article:

Yang Hai-Feng (杨海峰), Gao Wei (高伟), Cheng Hong (成红), Liu Hong-Ping (刘红平) Nonlinear spectroscopy of barium in parallel electric and magnetic fields 2014 Chin. Phys. B 23 103201


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