Magnetic coherence effects in the spectroscopy of transitions between energy levels with total angular momenta J = 1/2 and J = 1 using unidirectional waves

IF 0.9 4区 工程技术 Q3 Engineering Quantum Electronics Pub Date : 2022-06-01 DOI:10.1070/QEL18063
É. Saprykin, A. Chernenko
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Abstract

The physical processes that form the spectra of saturated absorption resonances at atomic transitions between energy levels with angular momenta J = 1/2 and J = 1 in the field of two unidirectional linearly polarised laser waves are studied analytically and numerically. It is shown that the specific features of the resonance spectra are formed in the Λ-schemes of transitions and manifest themselves in the form of narrow coherent structures – dips due to the magnetic coherence (optical orientation) of the transition levels induced by the optical fields. In this case, the energy levels of the lower state make the main contribution, and the contribution of the transfer of magnetic coherence from the sublevels of the upper state to the lower ones in the resonance amplitude manifests itself as an additive. Conditions are found under which the nonlinear resonance is exclusively coherent. The effect of the saturating wave field on the shape of coherent resonance structures is studied.
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单向波在总角动量J = 1/2和J = 1能级跃迁中的磁相干效应
本文用解析和数值方法研究了在两个单向线偏振激光场中角动量为J = 1/2和J = 1的能级间原子跃迁的饱和吸收共振光谱的物理过程。结果表明,共振光谱的特定特征是在跃迁的Λ-schemes中形成的,并且由于光场引起的跃迁能级的磁相干性(光学取向)而以窄相干结构的形式表现出来。在这种情况下,低能级的能级是主要的贡献,磁相干性在共振振幅中从高能级的子能级转移到低能级的贡献表现为加法。找到了非线性共振完全相干的条件。研究了饱和波场对相干共振结构形状的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Quantum Electronics
Quantum Electronics 工程技术-工程:电子与电气
CiteScore
3.00
自引率
11.10%
发文量
95
审稿时长
3-6 weeks
期刊介绍: Quantum Electronics covers the following principal headings Letters Lasers Active Media Interaction of Laser Radiation with Matter Laser Plasma Nonlinear Optical Phenomena Nanotechnologies Quantum Electronic Devices Optical Processing of Information Fiber and Integrated Optics Laser Applications in Technology and Metrology, Biology and Medicine.
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