Wu Pan, Yongrui Li, Bin Zhang, Haizhu Li. Design and Analysis of Metasurface Terahertz Dual-Band Linear Polarization Converter[J]. Laser & Optoelectronics Progress, 2023, 60(19): 1930002
- Laser & Optoelectronics Progress
- Vol. 60, Issue 19, 1930002 (2023)
Fig. 1. Front and side views of unit structure
Fig. 2. Schematic diagram of polarization conversion of linear polarization converter (x-polarized wave to y-polarized wave)
Fig. 3. Co-polarization and cross-polarization reflection coefficients of polarization converter (x-polarized wave incidence)
Fig. 4. PCR of polarization converter
Fig. 5. Schematic diagram of metasurface in uov coordinate system
Fig. 6. Reflection coefficient and phase change of polarization converter in uov coordinate system. (a) Reflection coefficient in uv direction; (b) phase and phase difference
Fig. 7. Ellipticity curve of reflected wave
Fig. 8. Surface current distributions on metasurface. (a) 0.649 THz surface current distribution; (b) 1.345 THz surface current distribution
Fig. 9. Fabry-Perot multiple interference model
Fig. 10. Numerical calculation and simulation calculation values of PCR for interference model
Fig. 11. Geometric analysis of nested structures of metasurfaces
Fig. 12. Influence of inner cross width b on PCR
Fig. 13. Influence of structural parameter w on PCR
Fig. 14. Influence of unit structure period p on PCR
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