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15 October 2020 Chirality-delinked manipulations on surface waves and propagating waves by an ultra-compact metasurface
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Abstract
Although many schemes have been proposed to manipulate propagating waves (PWs) and surface waves (SWs), usually each operation needs a different meta-device, being highly unfavorable for optics integrations. Here, we propose a scheme to design a single meta-device that can efficiently generate SWs and/or PWs with pre-designed wavefronts, illuminated by circularly polarized wave with different chirality. As a proof of concept, we design and fabricate a microwave meta-device and experimentally demonstrate that it can efficiently convert a CP wave with left or right handedness into a SW beam focused to a point or a SW beam travelling to a pre-designed direction. We further develop our scheme to design a meta-device and numerically demonstrate that it can either excite a SW beam or generate a far-field PW with pre-designed wavefront. Our work may stimulate simultaneous controls on far- and near-field EM environments based on a single ultra-compact platform.
Conference Presentation
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shulin Sun, Zhuo Wang, Shiqing Li, Qiong He, and Lei Zhou "Chirality-delinked manipulations on surface waves and propagating waves by an ultra-compact metasurface", Proc. SPIE 11557, Plasmonics V, 1155704 (15 October 2020); https://doi.org/10.1117/12.2575181
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