Optical Instruments, Volume. 46, Issue 3, 9(2024)
Research of BIC-based localized terahertz magnetic enhancement in double-layered diabolo metasurface
Figures & Tables(10)
Fig. 1. Double-layer diabolo metasurface and its supporting eigenmodes
Fig. 2. Simulated transmission spectra when lattice period
Fig. 3. Electric field distributions and surface current distributions on the stacked diabolo pairs at resonance of the LM 1 and LM 2
Fig. 5. The transmission spectra of PEC metassurface near BIC 1 and BIC 2 at different lattice periods
Fig. 6. The magnetic field intensity enhancements of eigenmodes supported by single- and double-layered diabolo metasurface without lattice mode coupling
Fig. 7. The magnetic field intensity enhancements at different lattice periods when eigenmodes supported by double-layer diabolo metasurface coupled with lattice modes
Table 1. Fitting parameters of transmission spectra at different lattice periods near BIC 1
View tableView in ArticleTable 1. Fitting parameters of transmission spectra at different lattice periods near BIC 1
P/μm ω1/THz ω2/THz $\gamma _1 $ $\gamma _2 $ κ/(×2π rad·s−1) A 150 0.689 0.69 0.009 0.011 38 0.03 1.25 153 (BIC 1) 0.678 1.50 160 0.650 1.20
Table 2. Fitting parameters of transmission spectra at different lattice periods near BIC 2
View tableView in ArticleTable 2. Fitting parameters of transmission spectra at different lattice periods near BIC 2
P/μm ω1/THz ω2/THz $\gamma _1 $ $\gamma _2 $ κ/(×2π rad·s−1) A 200 0.700 0.69 0.001 4 0.004 88 0.01 1.42 217 (BIC 2) 0.671 1.42 230 0.625 1.35
Table 3.
H in values corresponding to different lattice periodsP View tableView in ArticleTable 3.
H in values corresponding to different lattice periodsP P/μm Hin/(A·m−1) 110 468 180 286 240 215
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Xiaona YAN, Xinzhuo GAO, Xinyi LIU, Zuanming JIN. Research of BIC-based localized terahertz magnetic enhancement in double-layered diabolo metasurface[J]. Optical Instruments, 2024, 46(3): 9
Paper Information
Category: SPECIAL COLUMN: TERAHERTZ GENERATION, MANIPULATION AND SENSING TECHNOLOGY
Received: Apr. 29, 2024
Accepted: --
Published Online: Jul. 31, 2024
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