Fig. 1. Diagram of second demodulation process of ωR.

Fig. 2. LCVR phase retardation and transmittance. (a) Change relationship between LCVR phase retardation and voltage and (b) change relationship between unified transmittance and voltage.

Fig. 3. Schematic diagram of the liquid crystal variable attenuator.

Fig. 4. Schematic diagram of the laser intensity stabilization system.

Fig. 5. (Color online) Results of laser inspection system stabilization experiment.

Fig. 6. Results of the laser without intensity stabilization.

Fig. 7. Results of the laser with intensity stabilization.

Fig. 8. (Color online) Detection signal spectrum analysis.

Fig. 9. (Color online) Allan standard deviation curve.