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基于高效传输型超表面轨道角动量涡旋波束的产生

Generation of Orbital Angular Momentum Vortex Beams Based on High-Efficiency Transmission Metasurfaces

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摘要

应用高效传输型超表面, 构造了一种可控相位的传输透镜, 以标准角锥喇叭发出的准球面波照射, 产生携带不同拓扑荷值的涡旋场波束。所用超表面在大于10%带宽范围内能实现大于90%的传输效率和进行3 bit以上的相位调制。通过补偿相位公式的理论推导, 对超表面进行设计, 得到30 GHz的高效率传输型超表面产生的携带轨道角动量(OAM)的高阶涡旋波束。利用全波仿真对所提出的方案进行验证, 得到了与理论相符合的结果。

Abstract

The vortex beams carrying different topological values are generated based on the high efficiency transmission metasurfaces illuminated by quasi-spherical beams from standard horns. These metasurfaces are able to exhibit a transmission efficiency of over 90% in the bandwidth range of larger than 10% and an over 3-bit phase modulation. Through the theoretical derivation of a phase-compensation formula and the design of metasurfaces, high-order orbital angular momentum (OAM) vortex beams are generated on the high efficiency transmission metasurfaces at 30 GHz. The proposed scheme is verified by the full-wave simulation and the results agree well with the theoretical results.

Newport宣传-MKS新实验室计划
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中图分类号:O436

DOI:10.3788/AOS201939.0126016

所属栏目:“光场调控、传输及其应用”专题Ⅱ

基金项目:国家自然科学基金(11674111,61575070,11750110426)、福建省自然科学基金(2017J01003)、福建省科技计划对外合作项目(2016I0008)、泉州市科技计划对外合作项目(2017T005)、华侨大学研究生科研创新能力培育计划项目(17013082018,1611301025)

收稿日期:2018-07-27

修改稿日期:2018-10-04

网络出版日期:2018-10-16

作者单位    点击查看

刘凯婷:华侨大学信息科学与工程学院, 福建 厦门 361021
刘鑫:华侨大学信息科学与工程学院, 福建 厦门 361021
葛悦禾:华侨大学信息科学与工程学院, 福建 厦门 361021
蒲继雄:华侨大学信息科学与工程学院, 福建 厦门 361021

联系人作者:葛悦禾(yuehe@ieee.org); 蒲继雄(jixiong@hqu.edu.cn);

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引用该论文

Liu Kaiting,Liu Xin,Ge Yuehe,Pu Jixiong. Generation of Orbital Angular Momentum Vortex Beams Based on High-Efficiency Transmission Metasurfaces[J]. Acta Optica Sinica, 2019, 39(1): 0126016

刘凯婷,刘鑫,葛悦禾,蒲继雄. 基于高效传输型超表面轨道角动量涡旋波束的产生[J]. 光学学报, 2019, 39(1): 0126016

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