Sensitive and accurate quantum magnetometry for GNSS-denied positioning, critical national infrastructure, and magnetic anomaly detection

Ingleby, Stuart and Hunter, Dominic and Mrozowski, Marcin and Griffin, Paul and Riis, Erling (2024) Sensitive and accurate quantum magnetometry for GNSS-denied positioning, critical national infrastructure, and magnetic anomaly detection. Proceedings of SPIE: The International Society for Optical Engineering, 13202. 1320203. ISSN 0277-786X (https://doi.org/10.1117/12.3030911)

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Abstract

Optically pumped magnetometers (OPMs) exploiting alkali metal vapours for accurate, precise magnetometry have benefited from improvements in components and techniques in recent years. Microfabrication of alkali cells and chip-scale lasers allow mass-production of compact sensors, and feedback an spin-preparation techniques, such as light-narrowing, allow enhanced performance, comparable with cryogenic SQUID magnetometers. I will introduce two OPM modalities developed at Strathclyde for geomagnetic operation- the digital alkali-spin maser and geophysical free-precession magnetometer. I will discuss the potential impacts of using these sensors for geophysical applications, including Global Navigation Satellite System (GNSS)-denied positioning, monitoring of space weather and magnetic anomaly detection. I will present developments in microfabrication and digital signal processing which will enable their widespread adoption.

ORCID iDs

Ingleby, Stuart ORCID logoORCID: https://orcid.org/0000-0001-7473-9949, Hunter, Dominic ORCID logoORCID: https://orcid.org/0000-0003-4177-6027, Mrozowski, Marcin, Griffin, Paul ORCID logoORCID: https://orcid.org/0000-0002-0134-7554 and Riis, Erling ORCID logoORCID: https://orcid.org/0000-0002-3225-5302;
  • Item type:Article
    ID code:91270
    Dates:
    Date
    Event
    24 November 2024
    Published
    1 September 2024
    Accepted
    Notes:Copyright © 2024 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Strategic Research Themes > Ocean, Air and Space
    Depositing user: Pure Administrator
    Date deposited:26 Nov 2024 11:02
    Last modified:30 Nov 2024 14:28
    URI:https://strathprints.strath.ac.uk/id/eprint/91270
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