Journal of Applied Optics, Volume. 44, Issue 1, 6(2023)
Wide-band terahertz absorbing structure with graphene based on dual-scale four separation layers optimization
Figures & Tables(18)
Fig. 1. Schematic diagram of four layers basic absorbing unit of metal/graphene/dielectric/metal
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. 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
Table 1. Parameters of each layer of dual scale and four separation layers structure
View tableView in ArticleTable 1. Parameters of each layer of dual scale and four separation layers structure
名称 表面金属 结构尺度/µm 介质层 厚度/µm 基本层 结构 表面金属/ 石墨烯厚度/nm 尺度2第1层 24 21 M/G/I 15/1 尺度2第2层 15 53 M/G/I 15/1 尺度2第3层 6.4 47 M/G/I 15/1 尺度2第4层 8.8 25 M/G/I 15/1 尺度1第1层 449 107 M/G/I 15/1 尺度1第2层 246 141 M/G/I 15/1 尺度1第3层 221 140 M/G/I 15/1 尺度1第4层 170 128 M/G/I/M 15/1/2 µm
Table 2. Absorption efficiency of single scale and dual scale four separation layers structure at different incident angles
View tableView in ArticleTable 2. Absorption efficiency of single scale and dual scale four separation layers structure at different incident angles
入射角度/(°) 尺度1吸收率优于80%频率 范围/THz 尺度2吸收率优于80% 频率范围/THz 双尺度吸收率优于80% 频率范围/THz 0 [0.195～0.936]，[1.297～2.0] [0.594～2.0] [0.138～2.0] 10 [0.195～0.936]，[1.316～2.0] [0.594～2.0] [0.138～2.0] 20 [0.195～0.993]，[1.373～2.0] [0.613～2.0] [0.138～2.0] 30 [0.214～1.069]，[1.487～2.0] [0.651～2.0] [0.157～2.0] 40 [0.233～1.202]，[1.677～2.0] [0.727～2.0] [0.176～2.0] 50 [0.290～1.430]，2.0(频点) [0.898～2.0] [0.233～2.0] 60 [0.404～1.278]，[1.506～1.791] [1.278～2.0] [0.309～2.0]
Table 3. Absorption efficiency of single scale and dual scale four separation layers structure at different machining errors
View tableView in ArticleTable 3. Absorption efficiency of single scale and dual scale four separation layers structure at different machining errors
加工误差/% 尺度1吸收率优于80%频率 范围/THz 尺度2吸收率优于80% 频率范围/THz 双尺度吸收率优于80% 频率范围/THz 0 [0.195～0.917]，[1.297～2.0] [0.594～2.0] [0.138～2.0] +10 [0.176～0.741]，[1.164～1.848] [0.518～1.905] [0.119～2.0] −10 [0.176～0.841]，[1.164～1.848] [0.727～2.0] [0.138～2.0]
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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
Paper Information
Category: Research Articles
Received: Apr. 22, 2022
Accepted: --
Published Online: Feb. 22, 2023
The Author Email: LUO Mingwei (30233441@qq.com)
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