Active stabilization of terrestrial magnetic field with potassium atomic magnetometer.
Rev Sci Instrum
; 93(1): 015003, 2022 Jan 01.
Article
em En
| MEDLINE
| ID: mdl-35104996
ABSTRACT
This paper introduces a magnetically quiet environment where the magnetic-field noise is actively suppressed using an optically pumped potassium magnetometer. In a large dynamic range of Earth's magnetic fields, the magnetic-resonance signals of potassium are completely separated in frequency, and we experimentally demonstrate that one of them could be used to measure and compensate magnetic-field noise. The magnetic-field noise floor after stabilization is â¼100 fT/Hz under a bias field ranging from 20 to 100 µT. This method could be useful for fundamental-physics experiments and biomedical sciences where a large dynamic range of quiet magnetic fields is needed.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Rev Sci Instrum
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
China