Zhen LI. Design of near-field plasmonic vortex with shifting based on metasurface in terahertz region[J]. Optical Instruments, 2020, 42(5): 63
- Optical Instruments
- Vol. 42, Issue 5, 63 (2020)
Fig. 1. The schematic of the metasurface for structural parameters and vortex-center shifting
Fig. 2. Schematic of vortex optics
Fig. 3. Simulation of topological charge ±2 withs =1
Fig. 4. Simulation of topological charge of ±1 ，θ 0=135° ，s =2
Fig. 5. Electric field information of different turns
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