期刊
ACS PHOTONICS
卷 10, 期 7, 页码 2423-2431出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.2c02009
关键词
surface waves; wavefront manipulations; metasurfaces; Pancharatnam; Berry phase; wavevector matching condition; Conventional optical elements (e; g; micro prisms; lenses
We propose a new strategy to manipulate the wavefronts of surface waves (SWs) using Pancharatnam-Berry (PB) metasurfaces, which exhibit predesigned phase profiles. By scattering waves from different PB meta-atoms, a new SW wavefront can be formed under appropriate wavevector matching condition. Experimental results in the microwave regime demonstrate efficient SW manipulations, including deflection, focusing, Bessel beam, and Airy beam generations. These findings may inspire the realization of highly miniaturized on-chip devices for integrated photonics applications.
Freely tailoring the wavefronts of surface waves (SWs) plays a vital role in on-chip photonics applications, but diffraction-optics based devices usually exhibit limited tuning functionalities and low working efficiencies. Here, we propose a new strategy to manipulate the near-field wavefronts of SWs with Pancharatnam-Berry (PB) metasurfaces exhibiting predesigned phase profiles. As a SW beam flows across such a metasurface, waves scattered by different PB meta-atoms interfere with each other, forming a new SW wavefront under appropriate wavevector matching condition. As a proof of concept, we design and fabricate a series of PB metasurfaces working in the microwave regime and experimentally demonstrate that they can efficiently realize SW manipulations, including deflection, focusing, Bessel beam, and Airy beam generations. These findings may inspire the realization of highly miniaturized on-chip devices for integrated photonics applications.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据