Shuying Chen
Terahertz electrometry via infrared spectroscopy of atomic vapor
Chen, Shuying; Reed, Dominic J.; MacKellar, Andrew R.; Downes, Lucy A.; Almuhawish, Nourah F.A.; Jamieson, Matthew J.; Adams, Charles S.; Weatherill, Kevin J.
Authors
Dominic J. Reed
Dr Andrew Mackellar andrew.r.mackellar@durham.ac.uk
Post Doctoral Research Associate
Lucy Downes lucy.downes@durham.ac.uk
Post Doctoral Research Associate
Nourah F.A. Almuhawish
Matthew Jamieson matthew.j.jamieson@durham.ac.uk
PGR Student Doctor of Philosophy
Professor Stuart Adams c.s.adams@durham.ac.uk
Professor
Professor Kevin Weatherill k.j.weatherill@durham.ac.uk
Professor
Abstract
In recent years, the characterisation of radiation falling within the so-called ‘terahertz (THz) gap’ has become an ever more prominent issue due to the increasing use of THz systems in applications such as nondestructive testing, security screening, telecommunications, and medical diagnostics. THz detection technologies have advanced rapidly, yet traceable calibration of THz radiation remains challenging. In this paper, we demonstrate a system of electrometry in which a THz signal can be characterized using laser spectroscopy of highly excited (Rydberg) atomic states. We report on proof-of-principle measurements that reveal a minimum detectable THz electric field amplitude of 1.070.06 V/m at 1.06 THz (3 ms detection), corresponding to a THz power at the atomic cell of approximately 3.4 nW. Due to the relative simplicity and cryogen-free nature of this system, it has the potential to provide a route to a SI traceable ‘atomic candle’ for THz calibration across the terahertz frequency range, and provide an alternative to calorimetric methods.
Citation
Chen, S., Reed, D. J., MacKellar, A. R., Downes, L. A., Almuhawish, N. F., Jamieson, M. J., …Weatherill, K. J. (2022). Terahertz electrometry via infrared spectroscopy of atomic vapor. Optica, 9(5), 485-491. https://doi.org/10.1364/optica.456761
Journal Article Type | Article |
---|---|
Acceptance Date | Apr 4, 2022 |
Online Publication Date | Apr 29, 2022 |
Publication Date | 2022 |
Deposit Date | Mar 29, 2022 |
Publicly Available Date | Jul 18, 2022 |
Journal | Optica |
Publisher | Optica |
Peer Reviewed | Peer Reviewed |
Volume | 9 |
Issue | 5 |
Pages | 485-491 |
DOI | https://doi.org/10.1364/optica.456761 |
Public URL | https://durham-repository.worktribe.com/output/1209773 |
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Copyright Statement
Published by Optica Publishing Group under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work
must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
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