Lingyu WANG, Qiuyang SONG, Yu MIAO, Xiumin GAO. Design of all-dielectric metalens with linearly polarized focusing based on Pancharatnam-Berry phase[J]. Optical Instruments, 2023, 45(5): 53
- Optical Instruments
- Vol. 45, Issue 5, 53 (2023)
Fig. 1. Schematic diagram of the metalens structure
Fig. 2. PB phase diagrams carried by different silicon nanopillar structural units under the action of rotation angles
Fig. 3. Schematic diagram of the incident and focusing on the all-dielectric metalens
Fig. 4. Normalized electric field intensity profile
Fig. 5. The numerical plot of the normalized electric field intensity distribution
Fig. 6. The focusing effect figures of the metalens are made of various metal materials
Fig. 7. Focal point change curves of metalens made of three metal materials
Fig. 8. Focusing effect of each wavelength in the visible light band
Fig. 9. Variation curve of the focal point of each wavelength in the visible light band
Fig. 10. Focusing effect of three theoretical focal length lenses
Fig. 11. The actual focus change position of three theoretical focal length lenses
Fig. 12. The effect of metalens focusing at each nanopillar height
Fig. 13. The focal positions of the metalens for each nanopillar height
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