Wideband optical edge detection based on dielectric metasurface

被引：11

作者：

Bi, Xinyi ^{[1
]}

Guo, Xuyue ^{[1
]}

Wu, Xuanguang ^{[1
]}

Fan, Xinhao ^{[1
]}

Wei, Bingyan ^{[1
]}

Wen, Dandan ^{[1
]}

Liu, Sheng ^{[1
]}

Zhao, Jianlin ^{[1
]}

Li, Peng ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sch Phys Sci & Technol, Key Lab Light Field Manipulat & Informat Acquisit, Shaanxi Key Lab Opt Informat Technol,Minist Ind &, Xian 710129, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2023年 / 123卷 / 06期

基金：

中国国家自然科学基金;

关键词：

LAPLACE OPERATOR; PHASE; REFLECTION;

D O I：

10.1063/5.0161145

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Optical image edge detection manifests itself as the advantages of fast speed, low energy consumption, parallel operation, and large information capacity, playing a crucial role in object and image recognition in the realms of biology, medicine, and artificial intelligence. In this paper, a dielectric metasurface that can achieve object edge detection in the full visible band is proposed. By combining two optical differential methods referring to spatial spectrum-dependent transmission function and 4f system-based spatial spectrum phase shift, a tetratomic macropixel metasurface that enables polarization-correlated interference based on dual geometric phase modulation is designed, which can achieve object edge detection under 473, 530, and 633 nm wavelengths, and even under white light conditions. This coherent filtering metasurface operator provides a flexible approach for achieving wideband two-dimensional edge detection.

引用

页数：7

共 49 条

[1] Arbabi A, 2015, NAT NANOTECHNOL, V10, P937, DOI [10.1038/nnano.2015.186, 10.1038/NNANO.2015.186]
[2] Aydin K., 2023, NAT PORTFOLIO, DOI [10.21203/rs.3.rs-2834216/v1, DOI 10.21203/RS.3.RS-2834216/V1]
[3] Local edge-enhanced active contour for accurate skin lesion border detection
Bayraktar, Mustafa
Kockara, Sinan
Halic, Tansel
Mete, Mutlu
Wong, Henry K.
Iqbal, Kamran
[J]. BMC BIOINFORMATICS, 2019, 20 (Suppl 2)
[4] Optical computation of the Laplace operator using phase-shifted Bragg grating
Bykov, Dmitry A.
Doskolovich, Leonid L.
Bezus, Evgeni A.
Soifer, Victor A.
[J]. OPTICS EXPRESS, 2014, 22 (21): : 25084 - 25092
[5] Visible and near-infrared dual band switchable metasurface edge imaging
Chen, Guanghao
Zhou, Junxiao
Bopp, Steven Edward
Zhao, Junxiang
Liu, Zhaowei
[J]. OPTICS LETTERS, 2022, 47 (16) : 4040 - 4043
[6] Design and Experimental Realization of a Broadband Transformation Media Field Rotator at Microwave Frequencies
Chen, Huanyang
Hou, Bo
Chen, Shuyu
Ao, Xianyu
Wen, Weijia
Chan, C. T.
[J]. PHYSICAL REVIEW LETTERS, 2009, 102 (18)
[7] High-Index Dielectric Metasurfaces Performing Mathematical Operations
Cordaro, Andrea
Kwon, Hoyeong
Sounas, Dimitrios
Koenderink, A. Femius
Alu, Andrea
Polman, Albert
[J]. NANO LETTERS, 2019, 19 (12) : 8148 - 8423
[8] Image processing with the radial Hilbert transform: theory and experiments
Davis, JA
McNamara, DE
Cottrell, DM
Campos, J
[J]. OPTICS LETTERS, 2000, 25 (02) : 99 - 101
[9] Optical spatial differentiator based on subwavelength high-contrast gratings
Dong, Zhewei
Si, Jiangnan
Yu, Xuanyi
Deng, Xiaoxu
[J]. APPLIED PHYSICS LETTERS, 2018, 112 (18)
[10] Multi-Wavelength Biometric Acquisition System Utilizing Finger Vasculature NIR Imaging
Fiolka, Jerzy
Bernacki, Krzysztof
Farah, Alejandro
Popowicz, Adam
[J]. SENSORS, 2023, 23 (04)

← 1 2 3 4 5 →