Research on All-Optical Self-Oscillating He-4 Atomic Magnetometer

We use an optical method instead of the circuit's to shift the phase and realize an all-optical self-oscillating He-4 atomic magnetometer, in which the bandwidth is more than 1kHz and the sensitivity is 2pT/Hz(1/2)@10 Hz-500 Hz. This all-optical self-oscillating He-4 atomic magnetometer is suitable for magnetic field stabilization by real-time feedback of magnetic field changes through a voltage-controlled constant current source connected to field-stabilized coils, which provides the favorable conditions for testing other magnetometers.