Sub-wavelength focusing based on all-dielectric polarization-independent metalens

被引：3
|
作者：
Zhao, Wei [1 ,2 ]
Li, Xingyi [1 ,3 ]
Li, Siqi [1 ,3 ]
Ge, Zhiqiang [1 ,3 ]
Liu, Mulong [1 ,3 ]
Li, Zhongyu [1 ,3 ]
Du, Shujian [1 ,3 ]
机构：
[1] Chinese Acad Sci, XIOPM, State Key Lab Transient Opt & Photon, Xian 710119, Shaanxi, Peoples R China
[2] Shaanxi Normal Univ, Coll Phys & Informat Technol, Xian 710119, Shanxi, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2018年 / 32卷 / 29期
关键词：
Lenses; metamaterials; polarization; BROAD-BAND; ULTRA-THIN; REFLECTION; OPTICS; PLANAR;
D O I：
10.1142/S0217979218503216
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have proposed an all-dielectric polarization-independent metalens, which can be used for sub-wavelength focusing. The phase discontinuity of transmission light is produced by varying the diameter of the nanopillar. In this way, the incident light can be focused into sub-wavelength spot. Besides, finite-difference time-domain results show that near diffraction limit focusing is realized for the wavelength from 580 nm to 750 nm, which means the proposed metalens possesses a broad operation bandwidth. This all-dielectric metalens features polarization independent and broad bandwidth, and thus promises great potential for the applications of nanolithography, dense storage and biophotonics.
引用
收藏
页数：8
相关论文
共 50 条
  • [1] Sub-wavelength tight-focusing of terahertz waves by polarization-independent high-numerical-aperture dielectric metalens
    Chen, Hao
    Wu, Zhixiang
    Li, Zeyu
    Luo, Zhenfei
    Jiang, Xue
    Wen, Zhongquan
    Zhu, Liguo
    Zhou, Xun
    Li, Hua
    Shang, Zhengguo
    Zhang, Zhihai
    Zhang, Kun
    Liang, Gaofeng
    Jiang, Senlin
    Du, Lianghui
    Chen, Gang
    [J]. OPTICS EXPRESS, 2018, 26 (23): : 29817 - 29825
  • [2] A strategy for polarization-independent ultra-narrowband filters by sub-wavelength all-dielectric meta-materials
    Liu, Xiaoshan
    Fu, Guolan
    Liu, Mulin
    Liu, Zhengqi
    [J]. MATERIALS LETTERS, 2016, 168 : 44 - 47
  • [3] Towards all-dielectric, polarization-independent optical cloaks
    Andkjaer, Jacob
    Mortensen, N. Asger
    Sigmund, Ole
    [J]. APPLIED PHYSICS LETTERS, 2012, 100 (10)
  • [4] All-dielectric polarization-independent optical angular filter
    Qinyu Qian
    Changqing Xu
    Chinhua Wang
    [J]. Scientific Reports, 7
  • [5] All-dielectric polarization-independent optical angular filter
    Qian, Qinyu
    Xu, Changqing
    Wang, Chinhua
    [J]. SCIENTIFIC REPORTS, 2017, 7
  • [6] Polarization-Independent Narrowband Terahertz Filter Based on All-Dielectric Metasurfaces
    Zhan, Zhongqiu
    Wei, Jiang
    Miao, Yan
    Wang, Qingkang
    [J]. IEEE PHOTONICS JOURNAL, 2023, 15 (02):
  • [7] Toroidal dipole resonances by a sub-wavelength all-dielectric torus
    Liu, Liang
    Ge, Lixin
    [J]. OPTICS EXPRESS, 2022, 30 (05) : 7491 - 7500
  • [8] Deep Sub-Wavelength Focusing Metalens at Terahertz Frequency
    Yang, Mengyu
    Shen, Xin
    Wen, Zhongquan
    [J]. PHOTONICS, 2023, 10 (02)
  • [9] Simple and polarization-independent Dammann grating based on all-dielectric nanorod array
    Yang, Sen
    Li, Chuang
    Liu, Tongming
    Da, Haixia
    Feng, Rui
    Tang, Donghua
    Sun, Fangkui
    Ding, Weiqiang
    [J]. JOURNAL OF OPTICS, 2017, 19 (09)
  • [10] Polarization-independent longitudinal multi-focusing metalens
    Wang, Wei
    Guo, Zhongyi
    Zhou, Keya
    Sun, Yongxuan
    Shen, Fei
    Li, Yan
    Qu, Shiliang
    Liu, Shutian
    [J]. OPTICS EXPRESS, 2015, 23 (23): : 29855 - 29866
12345