Deep-ultraviolet to mid-infrared polarizers by Al nanowire metamaterials

Junxi Zhang, Kang Xie, Yongqing Wei, Pei Wang, Zhijia Hu, Haoyu Wang, Fei Wang, Taiming Liang, Sonia Ghafoor, Haiming Jiang, Li De Zhang, Lin Zhang

Research output: Contribution to journalArticle

Abstract

Polarizers are one of the most fundamental elements used in optical devices. Compared with conventional prism polarizers, wire grid polarizers have potential for the miniaturization and integration of the optical devices. There are growing demands for design of the wire grid polarizers operating in a very broad spectral range from deep-ultraviolet to mid-infrared wavelengths. However, construction of the ultrabroadband polarizers based on the same structures and materials is very challenging. Here, ultrabroadband optical polarizers working in the deep-ultraviolet to mid-infrared spectral region, based on Al nanowire metamaterials with hexagonally packed nanowire arrays, are presented. To synchronously obtain high extinction ratios and low insertion losses, a q factor is found, when the q factor is fixed, the extinction ratio increases and the insertion loss simultaneously decreases with decreasing nanowire diameter. Moreover, the cut-off wavelength of the polarizers remarkably shifts to a much shorter wavelength when the refractive index of the surrounding medium decreases. Consequently, the polarizers demonstrate high performance operating down to the deep-ultraviolet spectral range based on an optimal design of the Al nanowire metamaterials embedded in air by selecting a smaller diameter (e.g. 15 nm) and a suitable q factor (e.g. 2 or 2.5).

Original languageEnglish
Article number365102
JournalJournal of Physics D
Volume52
Issue number36
Early online date11 Jun 2019
DOIs
Publication statusPublished - 8 Jul 2019

Fingerprint

Metamaterials
polarizers
Nanowires
nanowires
Infrared radiation
Optical devices
Insertion losses
Wavelength
Wire
Prisms
insertion loss
Refractive index
extinction
grids
wavelengths
wire
miniaturization
Air
prisms
cut-off

Bibliographical note

As the Version of Record of this article is going to be/has been published on a subscription basis, this Accepted Manuscript will be available for reuse under a CC BY-NC-ND 3.0 licence after a 12 month embargo period.

Funding: National Natural Science
Foundation of China (51771186, 11574070, 11874012); The
Fundamental Research Funds for the Central Universities
(PA2018GDQT0006, JZ2017HGTB0187,
JZ2017HGBZ0942); The Seventh Framework Program of
the European Union for Research through Marie Curie
Actions-International Incoming Fellowships (623473,
913473); Program 973 (2015GB103003); The Project of
State Key Laboratory of Environment-friendly Energy
Materials, Southwest University of Science and Technology
(17FKSY0109); China Postdoctoral Science Foundation
(2015M571918, 2017T100442); The European Union’s
Horizon 2020 research and innovation program under the
Marie Skłodowska-Curie grant agreement (744817).

Keywords

  • Al nanowire metamaterial
  • cut-off wavelength
  • deep ultraviolet to mid-infrared spectral region
  • q factor
  • ultrabroadband polarizer

Cite this

Zhang, Junxi ; Xie, Kang ; Wei, Yongqing ; Wang, Pei ; Hu, Zhijia ; Wang, Haoyu ; Wang, Fei ; Liang, Taiming ; Ghafoor, Sonia ; Jiang, Haiming ; Zhang, Li De ; Zhang, Lin. / Deep-ultraviolet to mid-infrared polarizers by Al nanowire metamaterials. In: Journal of Physics D. 2019 ; Vol. 52, No. 36.
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abstract = "Polarizers are one of the most fundamental elements used in optical devices. Compared with conventional prism polarizers, wire grid polarizers have potential for the miniaturization and integration of the optical devices. There are growing demands for design of the wire grid polarizers operating in a very broad spectral range from deep-ultraviolet to mid-infrared wavelengths. However, construction of the ultrabroadband polarizers based on the same structures and materials is very challenging. Here, ultrabroadband optical polarizers working in the deep-ultraviolet to mid-infrared spectral region, based on Al nanowire metamaterials with hexagonally packed nanowire arrays, are presented. To synchronously obtain high extinction ratios and low insertion losses, a q factor is found, when the q factor is fixed, the extinction ratio increases and the insertion loss simultaneously decreases with decreasing nanowire diameter. Moreover, the cut-off wavelength of the polarizers remarkably shifts to a much shorter wavelength when the refractive index of the surrounding medium decreases. Consequently, the polarizers demonstrate high performance operating down to the deep-ultraviolet spectral range based on an optimal design of the Al nanowire metamaterials embedded in air by selecting a smaller diameter (e.g. 15 nm) and a suitable q factor (e.g. 2 or 2.5).",
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Zhang, J, Xie, K, Wei, Y, Wang, P, Hu, Z, Wang, H, Wang, F, Liang, T, Ghafoor, S, Jiang, H, Zhang, LD & Zhang, L 2019, 'Deep-ultraviolet to mid-infrared polarizers by Al nanowire metamaterials', Journal of Physics D, vol. 52, no. 36, 365102. https://doi.org/10.1088/1361-6463/ab28c9

Deep-ultraviolet to mid-infrared polarizers by Al nanowire metamaterials. / Zhang, Junxi; Xie, Kang; Wei, Yongqing; Wang, Pei; Hu, Zhijia; Wang, Haoyu; Wang, Fei; Liang, Taiming; Ghafoor, Sonia; Jiang, Haiming; Zhang, Li De; Zhang, Lin.

In: Journal of Physics D, Vol. 52, No. 36, 365102, 08.07.2019.

Research output: Contribution to journalArticle

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AU - Zhang, Junxi

AU - Xie, Kang

AU - Wei, Yongqing

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AU - Wang, Haoyu

AU - Wang, Fei

AU - Liang, Taiming

AU - Ghafoor, Sonia

AU - Jiang, Haiming

AU - Zhang, Li De

AU - Zhang, Lin

N1 - As the Version of Record of this article is going to be/has been published on a subscription basis, this Accepted Manuscript will be available for reuse under a CC BY-NC-ND 3.0 licence after a 12 month embargo period. Funding: National Natural Science Foundation of China (51771186, 11574070, 11874012); The Fundamental Research Funds for the Central Universities (PA2018GDQT0006, JZ2017HGTB0187, JZ2017HGBZ0942); The Seventh Framework Program of the European Union for Research through Marie Curie Actions-International Incoming Fellowships (623473, 913473); Program 973 (2015GB103003); The Project of State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology (17FKSY0109); China Postdoctoral Science Foundation (2015M571918, 2017T100442); The European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement (744817).

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N2 - Polarizers are one of the most fundamental elements used in optical devices. Compared with conventional prism polarizers, wire grid polarizers have potential for the miniaturization and integration of the optical devices. There are growing demands for design of the wire grid polarizers operating in a very broad spectral range from deep-ultraviolet to mid-infrared wavelengths. However, construction of the ultrabroadband polarizers based on the same structures and materials is very challenging. Here, ultrabroadband optical polarizers working in the deep-ultraviolet to mid-infrared spectral region, based on Al nanowire metamaterials with hexagonally packed nanowire arrays, are presented. To synchronously obtain high extinction ratios and low insertion losses, a q factor is found, when the q factor is fixed, the extinction ratio increases and the insertion loss simultaneously decreases with decreasing nanowire diameter. Moreover, the cut-off wavelength of the polarizers remarkably shifts to a much shorter wavelength when the refractive index of the surrounding medium decreases. Consequently, the polarizers demonstrate high performance operating down to the deep-ultraviolet spectral range based on an optimal design of the Al nanowire metamaterials embedded in air by selecting a smaller diameter (e.g. 15 nm) and a suitable q factor (e.g. 2 or 2.5).

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