Generation of diffraction-free beam with winding trajectory based on metasurface holography
The diffraction-free beams with curved trajectories and shaped wavefronts have wide application prospects in many fields. This paper proposes the generation of diffraction-free beam with winding trajectory and spiral wavefront based on holographic metasurface. The holographic metasurface consists of...
| Hlavní autoři: | , , , , , |
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| Médium: | Článek |
| Jazyk: | English |
| Vydáno: |
IOP Publishing
2024-01-01
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| Edice: | New Journal of Physics |
| Témata: | |
| On-line přístup: | https://doi.org/10.1088/1367-2630/ad397b |
| Shrnutí: | The diffraction-free beams with curved trajectories and shaped wavefronts have wide application prospects in many fields. This paper proposes the generation of diffraction-free beam with winding trajectory and spiral wavefront based on holographic metasurface. The holographic metasurface consists of rotated rectangular nanoholes and the winding trajectory for the generated diffraction-free beam may be in two or three dimensional space under the control of the rotated nanoholes. The multiple diffraction-free beams are exemplified and the performance of holographic metasurfaces are testified by the simulation and experiment results. The utilization of compact metasurface enables the flexible generation of the diffraction-free beams with complex trajectories and tailored wavefronts. It may bring more new applications of diffraction-free beams with on-demand trajectories and customized wavefronts. |
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| ISSN: | 1367-2630 |