雷达学报2021，Vol.10Issue(2)：267-273,7.DOI:10.12000/JR21043
基于时域数字编码超材料的非线性准贝塞尔波束生成
Nonlinear Quasi-Bessel Beam Generation Based on the Time-domain Digital-Coding Metasurface
摘要
Abstract
A quasi-Bessel beam is a type of nondiffracted beam commonly used in microwave and optical fields. Although numerous methods have been proposed for quasi-Bessel beam generation, they are valid only in linear systems, indicating that the generation of nonlinear quasi-Bessel beams remains a major challenge. Thus, we propose a new approach to produce quasi-Bessel beams at high-order harmonics based on the time-domain digital-coding metasurface, which is utilized to achieve accurate control of the phase profile at the nonlinear frequencies via proper coding strategies. The effect of phase discretization is also analyzed in detail. The simulation results confirm the validity of the proposed method, which provides a new approach for nonlinear beam manipulation.关键词
时域数字编码超材料/贝塞尔波束/非线性调制Key words
Time-domain digital coding metasurface/Bessel beam/Nonlinear modulation分类
信息技术与安全科学引用本文复制引用
方祖琦,程强,崔铁军..基于时域数字编码超材料的非线性准贝塞尔波束生成[J].雷达学报,2021,10(2):267-273,7.基金项目
The National Key Research and Development Program of China(2017YFA0700201),The National Natural Sci-ence Foundation of China(61890544) （2017YFA0700201）
