Fig. 1. Structure diagram of laser temperature control model

Fig. 2. Estimation result of laser temperature control system model

Fig. 3. Laser control circuit for SERF magnetometer

Fig. 4. Drive circuit of AC temperature control

Fig. 5. Filter for AC detection signal

Fig. 6. Demodulation flowchart of DPSD method for AC bridge

Fig. 7. Equivalent block diagram of disturbance observer

Fig. 8. Equivalent block diagram of IMC

Fig. 9. Simulation of temperature control

Fig. 10. Experimental verification of IMC+DOB method