High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfaces

doi:10.1515/nanoph-2022-0006

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfaces
	W. K. Pan; Z. Wang; Y. Z. Chen; S. Q. Li; X. Y. Zheng; X. Z. Tian; C. Chen; N. X. Xu; Q. He; L. Zhou and S. L. Sun
刊名	Nanophotonics
	2022
卷号	11 期号:9 页码:2025-2036
ISSN号	2192-8606
DOI	10.1515/nanoph-2022-0006
英文摘要	Achieving a pre-designed scattering pattern from an ultra-compact platform is highly desired for on-chip integration optics, but conventional techniques suffer from the limitations of bulky size, wavelength-scale modulation and low efficiency. Here, we propose a new strategy to efficiently generate arbitrary spin-polarized scattering far-field patterns from surface-wave (SW) excitations on a designer Pancharatnam-Berry (PB) metasurface. We find that a PB meta-atom serves as a subwavelength scatter to decouple impinging SW to a spin-polarized propagating wave (PW) with tailored amplitude and phase, and thus interference among PWs generated by scatterings at different PB meta-atoms can generate a tailored far-field pattern. As a proof of concept, we design and fabricate a series of PB metasurfaces in the microwave regime and experimentally demonstrate that they can generate desired radiation patterns within a broad frequency band, including unidirectional radiation, line/point focusing, vortex beam and hologram. These findings may stimulate important applications in on-chip integrated photonics.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/66713]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	W. K. Pan,Z. Wang,Y. Z. Chen,et al. High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfaces[J]. Nanophotonics,2022,11(9):2025-2036.
APA	W. K. Pan.,Z. Wang.,Y. Z. Chen.,S. Q. Li.,X. Y. Zheng.,...&L. Zhou and S. L. Sun.(2022).High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfaces.Nanophotonics,11(9),2025-2036.
MLA	W. K. Pan,et al."High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfaces".Nanophotonics 11.9(2022):2025-2036.