Characterization of ytterbium resonance lines at 649 nm with modulation-transfer spectroscopy

Zhou, Min; Sheng, Zhen; Luo, Limeng; Xu, Xiaojun

doi:10.1103/physreva.101.062506

Cited by 9 publications

(2 citation statements)

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“…For elements with high melting-points achieving high optical depth in vapour cells can be difficult, and hollow cathode lamps are frequently used to generate sufficient atomic density [76][77][78]. Hollow cathode lamps can also be used to generate high alkali-metal atomic density [79,80].…”

Section: Number Density and Cell-length Dependencementioning

confidence: 99%

Laser spectroscopy of hot atomic vapours: from ’scope to theoretical fit

et al. 2022

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The spectroscopy of hot atomic vapours is a hot topic. Many of the work-horse techniques of contemporary atomic physics were first demonstrated in hot vapours. Alkali-metal atomic vapours are ideal media for quantum-optics experiments as they combine: a large resonant optical depth; long coherence times; and well-understood atom-atom interactions. These features aid with the simplicity of both the experimental set up and the theoretical framework. The topic attracts much attention as these systems are ideal for studying both fundamental physics and has numerous applications, especially in sensing electromagnetic fields and quantum technology. This tutorial reviews the necessary theory to understand the Doppler broadened absorption spectroscopy of alkali-metal atoms, and explains the data taking and processing necessary to compare theory and experiment. The aim is to provide a gentle introduction to novice scientists starting their studies of the spectroscopy of thermal vapours whilst also calling attention to the application of these ideas in the contemporary literature. In addition, the work of expert practitioners in the field is highlighted, explaining the relevance of three extensively-used software packages that complement the presentation herein.

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Section: Number Density and Cell-length Dependencementioning

confidence: 99%

Laser spectroscopy of hot atomic vapours: from ’scope to theoretical fit

et al. 2022

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“…The importance of the technique is highlighted by its continued investigation and application. Recent examples include: the development of Zeeman-tunable MTS [27]; stabilisation of a distributed Bragg reflector laser to the Cs D 2 line [28], which could prove useful for nuclear magnetic resonance gyroscopes; characterisation of MTS of the 649 nm transition in naturally abundant Yb [29]; frequency stabilisation of a laser using MTS on molecular 127 I 2 for laser cooling of 174 Yb [30]; a study of the effect of polarisation misalignment on MTS locking stability [31]; development of a compact setup to achieve an optical frequency standard by locking a laser at 459 nm with MTS to the 133 Cs 6S 1/2 → 7P 1/2 transition [32]; a study of the effect of beam size on the stability of MTS locked lasers, leading to a short term stability of 4.5 × 10 −14 / √ τ on the 87 Rb D 2 line [33]; and MTS of a four level ladder system in 85 Rb which is employed to probe Rydberg transitions [34].…”

Section: Introductionmentioning

confidence: 99%

Modulation transfer spectroscopy of the D1 transition of potassium: theory and experiment

Innes,

Majumder,

Noh

et al. 2024

J. Phys. B: At. Mol. Opt. Phys.

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We report on a study of modulation transfer spectroscopy of the 4S1/2 → 4P1/2 (D1) transitionof naturally abundant potassium in a room-temperature vapour cell. This transition is critical forlaser cooling and optical pumping of potassium and our study is therefore motivated by the need forrobust laser frequency stabilisation. Despite the absence of a closed transition, the small ground-state hyperfine splitting in potassium results in strong crossover features in the D1 modulationtransfer spectrum. To emphasise this we compare the D1 and D2 spectra of potassium with thoseof rubidium. Further, we compare our experimental results with a detailed theoretical simulation,examining different pump-probe polarization configurations to identify the optimal signals for laserfrequency stabilisation. We find good agreement between the experiment and the theory, especiallyfor the lin ∥ lin polarization configuration.

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