Jing Zhao, Jiaxian Wang, Liping Lai, Qianqian Su, Weibin Qiu, Liqiang Zhuo. High-Q Dual-Band Terahertz Sensor Based on All-Dielectric Metasurface[J]. Laser & Optoelectronics Progress, 2022, 59(13): 1304004
- Laser & Optoelectronics Progress
- Vol. 59, Issue 13, 1304004 (2022)
Fig. 1. Schematic diagram of the sensor unit structure
Fig. 2. Analysis of the metasurface resonance performance. (a) Transmission spectra of metasurface under different asymmetric parameters; (b) electric field distribution of mode A and mode B
Fig. 3. Variation curve of Q factor with asymmetric parameter
Fig. 4. Influence of grating geometry parameters on transmission spectra. (a) Transmission spectra with different grating thicknesses; (b) transmission spectra with different grating widths
Fig. 5. Influence of the surrounding dielectric properties of the metasurface on transmission spectrum. (a) Transmission spectra at different refractive indices; (b) resonant frequency shifts of mode A and mode B under different refractive indices
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