Free-induction-decay magnetometer based on a microfabricated Cs vapor cell
Hunter, D. and Piccolomo, S. and Pritchard, J. D. and Brockie, N. L. and Dyer, T. E. and Riis, E. (2018) Free-induction-decay magnetometer based on a microfabricated Cs vapor cell. Physical Review Applied (10). 014002. ISSN 2331-7043 (https://doi.org/10.1103/PhysRevApplied.10.014002)
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Abstract
We describe an optically pumped Cs magnetometer containing a 1.5 mm thick microfabricated vapor cell with nitrogen buffer gas operating in a free-induction-decay (FID) configuration. This allows us to monitor the free Larmor precession of the spin coherent Cs atoms by separating the pump and probe phases in the time domain. A single light pulse can sufficiently polarize the atomic sample however, synchronous modulation of the light field actively drives the precession and maximizes the induced spin coherence. Both amplitude and frequency modulation have been implemented with noise floors of 3 pT / √ Hz and 16 pT / √ Hz respectively within the Nyquist limited bandwidth of 500 Hz .
ORCID iDs
Hunter, D. ORCID: https://orcid.org/0000-0003-4177-6027, Piccolomo, S. ORCID: https://orcid.org/0000-0002-7579-1471, Pritchard, J. D. ORCID: https://orcid.org/0000-0003-2172-7340, Brockie, N. L., Dyer, T. E. and Riis, E. ORCID: https://orcid.org/0000-0002-3225-5302;-
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Item type: Article ID code: 64212 Dates: DateEvent5 July 2018Published5 July 2018Published Online15 May 2018AcceptedNotes: Article corrected on 6 July 2018 to include link in data statement Subjects: Science > Physics Department: Faculty of Science > Physics Depositing user: Pure Administrator Date deposited: 04 Jun 2018 08:48 Last modified: 25 Nov 2024 01:14 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/64212