Indirect pumping bell–bloom magnetometer
Wang Meng-Bing1, Zhao Da-Fa2, Zhang Gui-Ying1, 3, Zhao Kai-Feng1, †
       

(color online) The experimental dispersive Lorentzian signal obtained from the Lockin amplifier by scanning the modulation frequency ν across the Larmor frequency. The cell temperature is 25.4 °C. The red line is the Lorentzian fit corresponding to the linewidth of 1.3 Hz.