Influence of buffer gas on the formation of N-resonances in rubidium vapors

IF 3.2 2区化学 Q1 SPECTROSCOPY

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2024-09-21 DOI:10.1016/j.sab.2024.107051

Armen Sargsyan , Rodolphe Momier , Claude Leroy , David Sarkisyan

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Abstract

The N-resonance process is an accessible and effective method for obtaining narrow (down to subnatural linewidth), and contrasted resonances, using two continuous lasers and a Rb vapor cell. In this article, we investigate the impact of buffer gas partial pressure on the contrast and linewidth of N-resonances formed in the

D_{1}

line of a ⁸⁵Rb thermal vapor. N-resonances are compared to usual EIT resonances, and we highlight their advantages and disadvantages. Measurements were performed with five vapor cells, each containing Rb and Ne buffer gas with different partial pressures (ranging from 0 to 400 Torr). This reveals the existence of an optimum Ne partial pressure that yields the best contrast, for which we provide a qualitative description. We then study the behavior of the N-resonance components when a transverse magnetic field is applied to the vapor cell. The frequency shift of each component is well described by theoretical calculations.

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缓冲气体对铷蒸汽中 N 共振形成的影响

N 共振过程是利用两个连续激光器和一个掺镱蒸汽池获得窄共振（低至亚自然线宽）和对比共振的一种方便有效的方法。在本文中，我们研究了缓冲气体分压对在 85Rb 热蒸汽的 D1 线中形成的 N 共振的对比度和线宽的影响。我们将 N 共振与通常的 EIT 共振进行了比较，并强调了它们的优缺点。测量使用了五个蒸气室，每个蒸气室都含有不同分压（从 0 托到 400 托）的铷和氖缓冲气体。这表明存在能产生最佳对比度的最佳 Ne 分压，我们对此进行了定性描述。然后，我们研究了当横向磁场作用于蒸气室时 N 共振成分的行为。理论计算很好地描述了每个成分的频率偏移。

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

Spectrochimica Acta Part B: Atomic Spectroscopy 物理-光谱学

CiteScore

6.10

自引率

12.10%

发文量

173

审稿时长

81 days

期刊介绍： Spectrochimica Acta Part B: Atomic Spectroscopy, is intended for the rapid publication of both original work and reviews in the following fields: Atomic Emission (AES), Atomic Absorption (AAS) and Atomic Fluorescence (AFS) spectroscopy; Mass Spectrometry (MS) for inorganic analysis covering Spark Source (SS-MS), Inductively Coupled Plasma (ICP-MS), Glow Discharge (GD-MS), and Secondary Ion Mass Spectrometry (SIMS). Laser induced atomic spectroscopy for inorganic analysis, including non-linear optical laser spectroscopy, covering Laser Enhanced Ionization (LEI), Laser Induced Fluorescence (LIF), Resonance Ionization Spectroscopy (RIS) and Resonance Ionization Mass Spectrometry (RIMS); Laser Induced Breakdown Spectroscopy (LIBS); Cavity Ringdown Spectroscopy (CRDS), Laser Ablation Inductively Coupled Plasma Atomic Emission Spectroscopy (LA-ICP-AES) and Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS). X-ray spectrometry, X-ray Optics and Microanalysis, including X-ray fluorescence spectrometry (XRF) and related techniques, in particular Total-reflection X-ray Fluorescence Spectrometry (TXRF), and Synchrotron Radiation-excited Total reflection XRF (SR-TXRF). Manuscripts dealing with (i) fundamentals, (ii) methodology development, (iii)instrumentation, and (iv) applications, can be submitted for publication.