Fig. 1. Schematic diagram of the experimental optical path of the polarization state of the wire grid vibrator

Fig. 2. QCL current power curve with/without half-wave plate

Fig. 3. Comparison curves of power and current passing through the wire grid polarizer at different incident angles

Fig. 4. Comparison curve of power and current reflected by wire grid polarizer at different incident angles

Fig. 5. Spot morphology of the transmitted beam

Fig. 6. Spot morphology of the reflected beam

Fig. 7. Schematic diagram of the optical path of the polarization beam combining experiment