Huimin Liu, Deli Chen, Xiaohong Sun. Characteristics of Metasurface Lens Based on Trapezoid Structure[J]. Laser & Optoelectronics Progress, 2022, 59(17): 1722003
- Laser & Optoelectronics Progress
- Vol. 59, Issue 17, 1722003 (2022)
Fig. 1. Unit structure of metalens
Fig. 2. (a) Structure parameters and phases and (b) structure parameters and transmittance when linearly polarized light is incident
Fig. 3. (a) Structure parameters and phases and (b) structure parameters and transmittance when circularly polarized light is incident
Fig. 4. Phase and transmittance of each structure in a single-row structure with period of 200 nm
Fig. 5. Focusing effect of single-row structure with period of 200 nm. (a) One-dimensional longitudinal field strength; (b) full width at half maximum (FWHM); (c) energy distribution
Fig. 6. Phase and transmittance of each structure under single-row structure with different periods. (a) Period is 250 nm; (b) period is 300 nm
Fig. 7. Focusing effect of single-row structure with period of 250 nm. (a) One-dimensional longitudinal field strength; (b) FWHM; (c) energy distribution
Fig. 8. Focusing effect of single-row structure with period of 300 nm. (a) One-dimensional longitudinal field strength; (b) FWHM; (c) energy distribution
Fig. 9. Phase and transmittance of each structure in single-row structure with period of 200 nm
Fig. 10. Focusing effect of single-row structure with period of 200 nm. (a) One-dimensional longitudinal field strength; (b) FWHM; (c) energy distribution
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Table 1. Single-row structure simulation results with different lattice periods
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