High-order acoustic vortex field generation based on a metasurface

Zhongyi Guo, Hongjun Liu, Hong Zhou, Keya Zhou, Shaomeng Wang, Fei Shen, Yubin Gong, Jun Gao, Shutian Liu, and Kai Guo
Phys. Rev. E 100, 053315 – Published 21 November 2019

Abstract

In this paper, we generalize the principle of a generated first-order acoustic vortex (AV) with the acoustic resonances (AR) of a metasurface, from which we have also proposed a method for generating the higher-order AVs by arranging the sequences of the AR metasurface properly. The usable frequency range of the designed AR metasurface has been investigated and is discussed in detail, which is about 44704600Hz and covers the range 0.9771.006f (f=4573.31Hz is the preset working frequency) approximately. Meanwhile, the designed AR metasurface can produce a frequency-adjustable AV field efficiently by adjusting the structure size and parameters of the planar AR layer. By discretizing the continuous phase distribution, the multiplexed AV beam with multiple orbital angular momentum states can also be generated effectively by arranging AR metasurface properly. The generated single and multiplexed AV beams can also be detected with the aid of the acoustic reverse phase plates accordingly.

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  • Received 21 March 2019

DOI:https://doi.org/10.1103/PhysRevE.100.053315

©2019 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied PhysicsGeneral PhysicsInterdisciplinary Physics

Authors & Affiliations

Zhongyi Guo1,*, Hongjun Liu1, Hong Zhou1, Keya Zhou2, Shaomeng Wang3, Fei Shen1, Yubin Gong3, Jun Gao1, Shutian Liu2, and Kai Guo1,†

  • 1School of Computer and Information, Hefei University of Technology, Hefei 230009, China
  • 2Department of Physics, Harbin Institute of Technology, Harbin 150001, China
  • 3National Key Lab on Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China

  • *guozhongyi@hfut.edu.cn
  • kai.guo@hfut.edu.cn

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Issue

Vol. 100, Iss. 5 — November 2019

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