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Voigt transmission windows in optically thick atomic vapours: a method to create single-peaked line centre filters [dataset] Open Access

Cascading light through two thermal vapour cells has been shown to improve the performance of atomic filters that aim to maximise peak transmission over a minimised bandpass window. In this paper, we explore the atomic physics responsible for the operation of the second cell, which is situated in a transverse (Voigt) magnetic field and opens a narrow transmission window in an optically thick atomic vapour. By assuming transitions with Gaussian line shapes and magnetic fields sufficiently large to access the hyperfine Paschen-Back regime, the window is modelled by resolving the two transitions closest to line centre. We discuss the validity of this model and perform an experiment which demonstrates the evolution of a naturally abundant Rb transmission window as a function of magnetic field. The model results in a significant reduction in two-cell parameter space, which we use to find theoretical optimised cascaded line centre filters for K, Na, Rb and Cs across both D lines. With the exception of Cs, these all have a better figure of merit than comparable single cell filters in literature. Most noteworthy is a Rb-D2 filter which outputs > 92% of light through a single peak at line centre, with maximum transmission 0.71 and a width of 330 MHz at half maximum.

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Resource type

Dataset

Contributors

Creator: Briscoe, Jack D ¹
Contact person: Briscoe, Jack D ¹
Data collector: Briscoe, Jack D ¹
Logue, Fraser D ¹
Pizzey, Danielle ¹
Wrathmall, Steven A. ¹
Hughes, Ifan G. ¹

¹ Durham University, UK

Funder

Engineering and Physical Sciences Research Council

Research methods

Other description

Keyword

Atomic physics
Spectroscopy

Subject

Atomic spectroscopy

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Cited in

Identifier

ark:/32150/r1j67313811
doi:10.15128/r1j67313811

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

File Details

Depositor

J.D. Briscoe

Date Uploaded

13 December 2022, 11:12:13

Date Modified

13 December 2022, 14:12:21

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File format: zip (ZIP Format)

Mime type: application/zip

File size: 68129461

Last modified: 2022:12:13 11:31:19+00:00

Filename: Voigt_Transmission_Windows_Data_Availability.zip

Original checksum: bc1dbe6199833f0bf161fe4735283e0d