Opto-Electronic Engineering, Volume. 49, Issue 7, 220032(2022)
Design of terahertz focusing lens based on high-resistivity silicon metasurface
Fig. 1. (a) The integration model of an AlGaN/GaN terahertz detector and a metasurface lens; (b) Schematic diagram of phase regulation of metasurface element array; (c) Schematic diagram of terahertz antenna structure
Fig. 2. (a) and (c) show the schematic diagram of single-sided cell structure and its energy distribution; (b) and (d) show the schematic diagram of double-sided cell structure and its energy distribution
Fig. 3. The phase and transmittance curves of the single and double structure of metasurface lens vary with diameter
Fig. 4. The two-dimensional phase distribution of metasurface lens
Fig. 5. (a) The array of single-sided metasurface lens; (b) The array of double-sided metasurface lens
Fig. 6. (a) and (c) show the field intensity distribution on the y-z plane and one-dimensional distribution on the y=0 of a single-sided structure when x =0 ; (b) and (d) are the field intensity distribution on the y-z surface when x=0 and one-dimensional distribution when y=0 of the double-sided metasurface lens; (e) and (g) are the field intensity distribution on the x-y plane and the one-dimensional distribution on y=0 when z=1.026 mm of the single-sided metasurface lens; (f) and (h) are the field intensity distribution on the x-y plane and the one-dimensional distribution on y=0 when z=1.067 mm of the double-sided metasurface lens
Fig. 7. Dispersion characteristics of double-sided metasurface lens
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Min Ma, Lin Jin, Hua Qin, Jiandong Sun, Lixiang Chen, Yunfei Sun. Design of terahertz focusing lens based on high-resistivity silicon metasurface[J]. Opto-Electronic Engineering, 2022, 49(7): 220032
Category: Article
Received: Mar. 31, 2022
Accepted: --
Published Online: Aug. 1, 2022
The Author Email: Sun Yunfei (yfsun@usts.edu.cn)