Acta Physica Sinica, Volume. 69, Issue 1, 014101-1(2020)

Two-dimensional optical edge detection based on Pancharatnam-Berry phase metasurface

Zhi-Qiang Xie1... Yan-Liang He1, Pei-Pei Wang1, Ming-Yang Su1, Xue-Yu Chen1, Bo Yang1, Jun-Min Liu2, Xin-Xing Zhou3, Ying Li1, Shu-Qing Chen1,* and Dian-Yuan Fan1 |Show fewer author(s)
Author Affiliations
  • 1International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology, and Engineering Technology Research Center for 2D Material Information Function Devices and Systems of Guangdong Province, Shenzhen University, Shenzhen 518060, China
  • 2College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
  • 3Synergetic Innovation Center for Quantum Effects and Applications, School of Physics and Electronics, Hunan Normal University, Changsha 410081, China
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    Figures & Tables(5)
    (a) Schematic for basic unit structure; (b) and (c) phase response of different length (l) and width (w) of the dielectric column under x- and y- LP incident beams; (d) phase difference between the x- and y-polarized light for different length (l) and width (w) of the dielectric column; (e) relationship between the rotation angle of the dielectric column and the additional phase.(a)单元结构示意图; (b)与(c) x与y方向线偏振入射光相位响应与介质柱长(l)、宽(w)之间的关系; (d) x和y方向上的相位差随l和w变化关系; (e)介质柱的旋转角与附加相位关系图.
    (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
    (a) The mask used in the simulation; (b)−(d) the result of 1D edge extraction when the periodT = 4 mm, 2 mm, 1 mm; (e)−(g) the result of 2D edge extraction when the periodT = 4 mm, 2 mm, 1 mm.(a) 深圳大学校徽掩模板; (b)−(d)周期T = 4 mm, 2 mm, 1 mm时, 一维边缘检测效果; (e)−(g)周期T = 4 mm, 2 mm, 1 mm时二维边缘检测效果
    (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
    Spatial spectral transfer function of the optical axis distribution functions with different power exponent in the x- and y- direction respectively.幂指数不同的光轴分布函数分别在x与y方向上的空间传递函数
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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. Two-dimensional optical edge detection based on Pancharatnam-Berry phase metasurface[J]. Acta Physica Sinica, 2020, 69(1): 014101-1

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    Paper Information

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    Received: Aug. 4, 2019

    Accepted: --

    Published Online: Nov. 4, 2020

    The Author Email:

    DOI:10.7498/aps.69.20191181

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