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Asymmetric spatial power beam splitter based on all dielectric metasurface with transmission phase

JIANMIN LI1, PENG CHEN2, BO FANG2,* , JINHUI CAI2, LE ZHANG2, JIANXUN LU3, YINGLAI WU4, WENKANG HUANG5, LIBO XU6, CHENXIA LI6, XUFENG JING6

Affiliation

  1. University of Shanghai for Science and Technology, No. 516 Jung Gong Road, Shanghai 200093, China
  2. College of Metrology & Measurement Engineering, China Jiliang University, Hangzhou 310018, China
  3. Zhejiang Smart Information Technology, Co., Ltd., Jinhua, 321000, PR China
  4. School of entrepreneurship, Hangzhou Dianzi University, Hangzhou 310000, China
  5. Zhejiang Institute of Economics & Trade, Hangzhou 310018, China
  6. Institute of Optoelectronic Technology, China Jiliang University, Hangzhou 310018, China

Abstract

In order to freely manipulate electromagnetic beam, a transmissively coded metasurface beam splitter is proposed. The unit structure of the coded metasurface can be constructed by using polyimide as substrate and quadrate silicon column as dielectric scattering resonance cell. By changing the height of the square column of silicon material, the transfer phase of the cell structure can be changed. These unit structures with certain phase difference and large transmission amplitude can be encoded to construct the all dielectric coded metasurface. Based on different coding arrangement, different angles and different numbers of beam splitting can be achieved. By changing the incident angle, multiple beams with different energy distribution ratio can be obtained. Asymmetric spatial power beam splitter can be realized by using these encoding metasurfaces. Based on the phase array antenna principle, the calculated scattering angle agrees well with that of the numerical simulation.

Keywords

Metasurface, Metamaterials, Optics devices, Terahertz.

Citation

JIANMIN LI, PENG CHEN, BO FANG, JINHUI CAI, LE ZHANG, JIANXUN LU, YINGLAI WU, WENKANG HUANG, LIBO XU, CHENXIA LI, XUFENG JING, Asymmetric spatial power beam splitter based on all dielectric metasurface with transmission phase, Optoelectronics and Advanced Materials - Rapid Communications, 16, 5-6, May-June 2022, pp.179-186 (2022).

Submitted at: Aug. 18, 2021

Accepted at: June 6, 2022