Non-linear spectral splitting of Rydberg sodium in external fields

doi:10.1088/1674-1056/24/1/013202

›› 2015, Vol. 24 ›› Issue (1): 13202-013202.doi: 10.1088/1674-1056/24/1/013202

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Non-linear spectral splitting of Rydberg sodium in external fields

高伟^a, 杨海峰^a, 成红^a, 张珊珊^a, 刘丹峰^b, 刘红平^a

a State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physicsand Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;
b School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China

收稿日期:2014-06-24 修回日期:2014-07-14 出版日期:2015-01-05 发布日期:2015-01-05
基金资助:
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).

Non-linear spectral splitting of Rydberg sodium in external fields

Gao Wei (高伟)^a, Yang Hai-Feng (杨海峰)^a, Cheng Hong (成红)^a, Zhang Shan-Shan (张珊珊)^a, Liu Dan-Feng (刘丹峰)^b, Liu Hong-Ping (刘红平)^a

a State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physicsand Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;
b School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China

Received:2014-06-24 Revised:2014-07-14 Online:2015-01-05 Published:2015-01-05
Contact: Liu Hong-Ping E-mail:liuhongping@wipm.ac.cn
Supported by:
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).

摘要/Abstract

摘要： We have studied highly excited sodium in various electric fields, parallel electric and magnetic fields, with one σ and π photon irradiation, and even in a magnetic field with a complex laser polarization configuration. The σ spectra shows a simple linear Stark effect with the applied electric field, while the π spectra exhibits a strong non-linear dependence on the electric field. The π transitions in parallel fields show a similar behavior to that in a pure electric field but the spectra get more smooth due to the magnetic field. The diamagnetic spectrum with laser polarization angles between 0 and π/2 proves that it can be reproduced by simple linear combination of π and σ components, indicating there is no interference between the π and σ channels. A full quantum calculation considering the quantum defects accounts for all the observations. The quantum defects, especially for the channel np, play an important role in the spectral profile.

关键词: Stark spectrum, magnetic spectrum, quantum defect

Abstract: We have studied highly excited sodium in various electric fields, parallel electric and magnetic fields, with one σ and π photon irradiation, and even in a magnetic field with a complex laser polarization configuration. The σ spectra shows a simple linear Stark effect with the applied electric field, while the π spectra exhibits a strong non-linear dependence on the electric field. The π transitions in parallel fields show a similar behavior to that in a pure electric field but the spectra get more smooth due to the magnetic field. The diamagnetic spectrum with laser polarization angles between 0 and π/2 proves that it can be reproduced by simple linear combination of π and σ components, indicating there is no interference between the π and σ channels. A full quantum calculation considering the quantum defects accounts for all the observations. The quantum defects, especially for the channel np, play an important role in the spectral profile.

Key words: Stark spectrum, magnetic spectrum, quantum defect

中图分类号: (Zeeman and Stark effects)

32.60.+i

32.80.Ee (Rydberg states) 03.65.-w (Quantum mechanics)

高伟, 杨海峰, 成红, 张珊珊, 刘丹峰, 刘红平. Non-linear spectral splitting of Rydberg sodium in external fields[J]. , 2015, 24(1): 13202-013202.

Gao Wei (高伟), Yang Hai-Feng (杨海峰), Cheng Hong (成红), Zhang Shan-Shan (张珊珊), Liu Dan-Feng (刘丹峰), Liu Hong-Ping (刘红平). Non-linear spectral splitting of Rydberg sodium in external fields[J]. Chin. Phys. B, 2015, 24(1): 13202-013202.

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Non-linear spectral splitting of Rydberg sodium in external fields

Non-linear spectral splitting of Rydberg sodium in external fields

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