Ligang TAN, Mingwei LUO, Jie LI. Wide-band terahertz absorbing structure with graphene based on dual-scale four separation layers optimization[J]. Journal of Applied Optics, 2023, 44(1): 6
- Journal of Applied Optics
- Vol. 44, Issue 1, 6 (2023)
Fig. 1. Schematic diagram of four layers basic absorbing unit of metal/graphene/dielectric/metal
Fig. 2. Schematic diagram of equivalent resonance circuit
Fig. 3. Flow chart of multi-layer structure optimization by genetic algorithm
Fig. 4. Schematic diagram of dual scale and four separation layers structure
Fig. 5. Absorption efficiency simulation of single scale and four separation layers structure
Fig. 6. Absorption efficiency simulation of dual scale and metal/dielectric/metal four separation layers structure
Fig. 7. Absorption efficiency simulation of dual scale and metal/graphene/dielectric/metal four separation layers structure
Fig. 8. Total absorption efficiency of structure
Fig. 9. Absorption efficiency simulation of four separation layers structure in scale 1 at different incident angles
Fig. 10. Absorption efficiency simulation of four separation layers structure in scale 2 at different incident angles
Fig. 11. Absorption efficiency simulation of dual scale and four separation layers structure at different incident angles
Fig. 12. Absorption efficiency simulation of scale 1 and scale 2 four separation layers structure at +10% machining errors
Fig. 13. Absorption efficiency simulation of dual scale four separation layers structure at +10% machining errors
Fig. 14. Absorption efficiency simulation of scale 1 and scale 2 four separation layers structure at −10% machining errors
Fig. 15. Absorption efficiency simulation of dual scale four separation layers structure at −10% machining errors
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Table 1. Parameters of each layer of dual scale and four separation layers structure
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Table 2. Absorption efficiency of single scale and dual scale four separation layers structure at different incident angles
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Table 3. Absorption efficiency of single scale and dual scale four separation layers structure at different machining errors
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