Linear polarization conversion of transmitted terahertz wave with double-layer meta-grating surfaces

Han Sun; Yaxin Zhang; Kailong Wang; Yuncheng Zhao; Wei Kou; Shixiong Liang; Jiaguang Han; Ziqiang Yang

doi:doi:10.3788/COL201816.081601

Chinese Optics Letters, 2018, 16 (8): 081601, Published Online: Aug. 2, 2018

Linear polarization conversion of transmitted terahertz wave with double-layer meta-grating surfaces Download： 645次

Han Sun ¹Yaxin Zhang ^1,*Kailong Wang ¹Yuncheng Zhao ¹Wei Kou ¹Shixiong Liang ^2,**Jiaguang Han ³Ziqiang Yang ¹

Author Affiliations

¹ Terahertz Science Cooperative Innovation Center, University of Electronic Science and Technology of China, Chengdu 610054, China

² National Key Laboratory of Application Specific Integrated Circuit, Hebei Semiconductor Research Institute, Shijiazhuang 050051, China

³ Center for Terahertz Waves, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Key Laboratory of Optoelectronic Information Technology (Ministry of Education), Tianjin 300072, China

Figures & Tables

Fig. 1. (a) Schematic of the sample used in the experiment. (b) The size parameters of the unit cell. (c) The photos of the manufactured metasurface. (d) The photos of the manufactured grating layer.

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Fig. 2. (a) TDS experimental test system. (b) Time-domain waveform. (c) The FFT of the time-domain signal of the air sample, the cross-polarization coefficient (Txy), and co-polarization coefficient (Tyy), respectively. (d) Transmittance spectra of simulated results (solid strips) and measured results (dotted strips).

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Fig. 3. (a) Decomposition of the incident electric field vector E_in. (b) The surface current distributions and field contours of modes A and B. (c) The transmission coefficients (S21) of electric fields E1 and E2 and the transmission of Tyy and Txy for just one metasurface layer.

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Fig. 4. (a) Scheme of the Fabry–Perot like resonance in the structure. (b) Cross-polarization conversion coefficients of the double-layer structure. (c) Cross-polarized transmission coefficients with different r.

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Han Sun, Yaxin Zhang, Kailong Wang, Yuncheng Zhao, Wei Kou, Shixiong Liang, Jiaguang Han, Ziqiang Yang. Linear polarization conversion of transmitted terahertz wave with double-layer meta-grating surfaces[J]. Chinese Optics Letters, 2018, 16(8): 081601.

Linear polarization conversion of transmitted terahertz wave with double-layer meta-grating surfaces Download： 645次

Fig. 1. (a) Schematic of the sample used in the experiment. (b) The size parameters of the unit cell. (c) The photos of the manufactured metasurface. (d) The photos of the manufactured grating layer.

Fig. 3. (a) Decomposition of the incident electric field vector E_in. (b) The surface current distributions and field contours of modes A and B. (c) The transmission coefficients (S21) of electric fields E1 and E2 and the transmission of Tyy and Txy for just one metasurface layer.

Fig. 4. (a) Scheme of the Fabry–Perot like resonance in the structure. (b) Cross-polarization conversion coefficients of the double-layer structure. (c) Cross-polarized transmission coefficients with different r.

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Linear polarization conversion of transmitted terahertz wave with double-layer meta-grating surfaces Download： 645次

Fig. 1. (a) Schematic of the sample used in the experiment. (b) The size parameters of the unit cell. (c) The photos of the manufactured metasurface. (d) The photos of the manufactured grating layer.

Fig. 3. (a) Decomposition of the incident electric field vector Ein. (b) The surface current distributions and field contours of modes A and B. (c) The transmission coefficients (S21) of electric fields E1 and E2 and the transmission of Tyy and Txy for just one metasurface layer.

Fig. 4. (a) Scheme of the Fabry–Perot like resonance in the structure. (b) Cross-polarization conversion coefficients of the double-layer structure. (c) Cross-polarized transmission coefficients with different r.

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Fig. 3. (a) Decomposition of the incident electric field vector E_in. (b) The surface current distributions and field contours of modes A and B. (c) The transmission coefficients (S21) of electric fields E1 and E2 and the transmission of Tyy and Txy for just one metasurface layer.