LAUSR

We study the impact of the heater-induced longitudinal field on the vector rubidium atomic magnetometers detecting low-frequency transverse magnetic field, which enlightens the parameter optimization of the applied heaters. Our results, both theoretical simulation and experimental measurement included, indicate that by carefully adjusting the frequency and amplitude, the impact of the heater-induced longitudinal field can be efficiently eliminated; meanwhile, the signal amplitude can be potentially enhanced. The numerical simulation agrees well with the experimental measurement in various cases, demonstrating that our proposed model is well suitable for predicting the actual performance of atomic magnetometers by taking the heater-induced longitudinal field into account.