Fig. 1. Subwavelength surface microstructure and parameter characterization

Fig. 2. Schematic diagram of simulation model

Fig. 3. Transmission distribution of microstructure with different parameters

Fig. 4. Transmission curve of microstructure with different parameters

Fig. 5. Overall morphology of microstructure

Fig. 6. CLSM images of sub-wavelength microstructure

Fig. 7. Infrared transmission spectrum curve of zinc sulfide surface