Acta Physica Sinica, Volume. 69, Issue 1, 014101-1(2020)
Fig. 1. (a) Schematic for basic unit structure; (b) and (c) phase response of different length (
Fig. 2. (a) Schematic diagram of the 2D optical edge detection; (b) phase gradient of the LHCP and RHCP component after the P-B phase matesurface; (c) diagram of the metasurface; (d) and (e) wavefront changes of RHCP and LHCP plane waves through the metasurface.(a)光学二维边缘检测原理图; (b) LHCP与RHCP通过PB相位超表面后获得的相位梯度变化; (c) P-B相位超表面示意图; (d)和(e) RHCP与LHCP平面波通过超表面后波前变化图
Fig. 3. (a) The mask used in the simulation; (b)−(d) the result of 1D edge extraction when the period
Fig. 4. (a) Mask patterns of different squre; (b)−(d) metasurface fast-axis distributions and phase distributions of LHCP after metasurface; (e)−(g) results of the edge extraction with different Metasurface fast-axis distributions; (h)−(j) phase difference distributions of LHCP and RHCP at 0.1 m transmission distance.(a)形状不同的正方形掩膜板; (b)−(d)超表面的快轴分布以及LHCP通过超表面后的相位分布; (e)−(g)不同光轴分布的超表面实现边缘提取效果; (h)−(j)经过传输距离为0.1 m后LHCP和RHCP的相位差分布
Fig. 5. Spatial spectral transfer function of the optical axis distribution functions with different power exponent in the
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Zhi-Qiang Xie, Yan-Liang He, Pei-Pei Wang, Ming-Yang Su, Xue-Yu Chen, Bo Yang, Jun-Min Liu, Xin-Xing Zhou, Ying Li, Shu-Qing Chen, Dian-Yuan Fan.
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Received: Aug. 4, 2019
Accepted: --
Published Online: Nov. 4, 2020
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