基于传输相位的线性偏振涡旋光束强度调控太赫兹超构表面透镜
Terahertz Metasurface Lenses with Linear Polarization Vortex Beam Intensity Regulation Based on Dynamic Phase
DOI: 10.12677/MOS.2023.123273, PDF,   
作者: 卢彬彬：上海理工大学，光电信息与计算机工程学院，上海
关键词: 超构表面；传输相位；涡旋；偏振依赖；强度调控；Metasurface； Dynamic Phase； Vortex； Polarization Dependent； Intensity Regulation
摘要: 为了提高涡旋光束强度分布的横向调控能力，设计了一种基于传输相位全介质结构超构表面功能器件。采用传输相位的波前调控方式，结合时域有限差分方法(FDTD)，对设计的超构表面进行了数值仿真。研究结果表明，通过对入射的线性偏振分量分别设计相位分布，得到了两个横向强度分布可由入射偏振态自由调控的涡旋光束，同时使得横向复用的两个涡旋光束具有相互正交的偏振态。相关研究有望应用于光通讯、微粒操控和信息加密等领域。
Abstract: In order to improve the lateral control ability of vortex beam intensity distribution, a metasurface functional device based on the transmission phase all-dielectric structure is designed. The wave-front regulation method of dynamic phase and the finite difference time-domain method (FDTD) were used to numerically simulate the designed metasurface. The results show that by designing the phase distribution of the incident linear polarization components, two vortex beams with lateral intensity distribution can be freely adjusted by the incident polarization state, and the two vortex beams laterally multiplexed have orthogonal polarization states with each other. Related research is expected to be applied to optical communication, particle manipulation and information encryp-tion.
文章引用：卢彬彬. 基于传输相位的线性偏振涡旋光束强度调控太赫兹超构表面透镜[J]. 建模与仿真, 2023, 12(3): 2960-2967. https://doi.org/10.12677/MOS.2023.123273

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