Fig. 1. Unit of the metasurface and its phase shift, conversion efficiency and transmission coefficient

Fig. 1. Unit of the metasurface and its phase shift, conversion efficiency and transmission coefficient

Fig. 2. Principle of polarization-response metalens and top view of the designed device

Fig. 2. Principle of polarization-response metalens and top view of the designed device

Fig. 3. Intensity distributions at the center of the device and in the x-z planewhen illuminated by incident light at each polarization state

Fig. 3. Intensity distributions at the center of the device and in the x-z planewhen illuminated by incident light at each polarization state

Fig. 4. The relationship between FWHM and separation distance and the comparison of transverse FWHM

Fig. 4. The relationship between FWHM and separation distance and the comparison of transverse FWHM

Fig. 5. Intensity after adjustment of incident light

Fig. 5. Intensity after adjustment of incident light