开放态的线展宽分析：二光子和三光子光谱学

IF 1.5 4区物理与天体物理 Q3 OPTICS

The European Physical Journal D Pub Date : 2025-05-16 DOI:10.1140/epjd/s10053-025-01004-y

Dorothy Koki Mringie, Kipkorir Cornelius, Geoffrey Kihara Rurimo, Ogaro Elijah Nyakang’o

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引用次数: 0

摘要

本文从理论上分析了双光子光谱（v型原子系统）中开放态的谱线展宽机制。利用三共振光谱学中的电磁诱导吸收效应，解决了粒子群光泵浦到暗态（或亚稳定态）和波长不匹配引起的部分多普勒加宽问题。在反向传播\(\Lambda \) -系统中，红外跃迁的线宽有限，固定红外激光频率场的多普勒频移相反，这将EIA效应限制在一个狭窄的频率范围内。对于有限温度下的原子蒸汽，在探针的透明光谱上产生了振幅较大的窄倾角，有效地分辨了\(^{85}\) Rb中\(6\text {P}_{3/2}\)状态的紧密间隔线。

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Line broadening analysis for open states: two- and three-photon spectroscopy

In this paper, we present a theoretical analysis of line broadening mechanisms for open states in two-photon spectroscopy (a V-type atomic system). The effects of optical pumping of population to a dark state (or meta-stable states) and partial Doppler broadening due to wavelength mismatch are solved using electromagnetically induced absorption (EIA) effect in triple resonance spectroscopy. The finite linewidth of IR transition and opposite Doppler shifts of the fixed IR laser frequency fields in a counter-propagation \(\Lambda \)-system, which restricts EIA effect to a narrow range of frequencies. For atomic vapor at a finite temperature, narrow dips with large amplitude are induced on the transparency spectra of the probe, effectively resolving closely spaced lines of the \(6\text {P}_{3/2}\) state in \(^{85}\)Rb.

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来源期刊

The European Physical Journal D 物理-物理：原子、分子和化学物理

CiteScore

3.10

自引率

11.10%

发文量

213

审稿时长

3 months

期刊介绍： The European Physical Journal D (EPJ D) presents new and original research results in: Atomic Physics; Molecular Physics and Chemical Physics; Atomic and Molecular Collisions; Clusters and Nanostructures; Plasma Physics; Laser Cooling and Quantum Gas; Nonlinear Dynamics; Optical Physics; Quantum Optics and Quantum Information; Ultraintense and Ultrashort Laser Fields. The range of topics covered in these areas is extensive, from Molecular Interaction and Reactivity to Spectroscopy and Thermodynamics of Clusters, from Atomic Optics to Bose-Einstein Condensation to Femtochemistry.