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Main > Chinese Optics Letters >  Volume 16 >  Issue 8 >  Page 081601 > Article
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    • Received: May. 2, 2018

    Accepted: Jun. 13, 2018

    Posted: Jan. 17, 2019

    Published Online: Aug. 2, 2018

    The Author Email: Yaxin Zhang (zhangyaxin@uestc.edu.cn), Shixiong Liang (wialliam@163.com)

    DOI: 10.3788/COL201816.081601

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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

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(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. 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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(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).

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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(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. 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.

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(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.

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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