| PAN Wu,WANG Xue-yin,CHEN Qi,REN Xin-yu,MA Yong.Design of multi-channel terahertz beam splitter based on Z-shaped metasurface[J].Optoelectronics Letters,2020,16(6):437-440 |
| Design of multi-channel terahertz beam splitter based on Z-shaped metasurface |
| Author Name | Affiliation | | PAN Wu | College of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China | | WANG Xue-yin | College of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China | | CHEN Qi | College of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China | | REN Xin-yu | College of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China | | MA Yong | College of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China |
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| Abstract: |
| A reflective beam splitter is proposed and verified. The unit cell of the beam splitter is composed of a metal pattern, a dielectric substrate, and a metallic ground. Each subarray structure of the device is composed of four unit cells, which are gradually rotated at 45°. The horizontal and vertical subarrays form a 4×4 gradient metasurface supercell. In the operating frequency band, the incident linearly polarized terahertz wave is reflected and divided into four beams of approximately equal power but different propagation directions. The proposed terahertz beam splitter based on metasurface has the advantages of small size, low cost and easy processing, and can be applied to terahertz stealth and imaging. |
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