A highly drift-stable atomic magnetometer for fundamental physics experiments
نویسندگان
چکیده
We report the design and performance of a nonmagnetic drift stable optically pumped cesium magnetometer with measured sensitivity 35 fT at 200 s integration time stability below 50 between 70 600 s. The sensor is based on nonlinear magneto-optical rotation effect: in Bell–Bloom configuration, higher order polarization moment (alignment) Cs atoms created pump laser beam an anti-relaxation coated Pyrex cell under vacuum, filled vapor room temperature. plane light passing through modulated due precession external magnetic field 2.1 μT, used to determine Larmor frequency. Operation sequence optical pumping observation freely precessing spins repetition rate 8 Hz. This free decay readout scheme separates probing and, thus, ensures systematically highly clean measurement. Due residual offset <15 pT together negligible crosstalk adjacent sensors, this device uniquely suitable for variety experiments low-energy particle physics extreme precision, here as reference probe search time-reversal symmetry violating electric dipole moments.
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ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2022
ISSN: ['1520-8842', '0003-6951', '1077-3118']
DOI: https://doi.org/10.1063/5.0083854