曲阜师范大学学报（自然科学版）2024，Vol.50Issue(2)：115-119,5.DOI:10.3969/j.issn.1001-5337.2024.2.115
基于等离激元超表面的径向和角向偏振矢量光束的产生
Generation of radially and azimuthally polarized vector vortex beams based on plasmonic metasurfaces
摘要
Abstract
In order to meet the needs of large capacity and fast transmission and processing of informa-tion,small planar integrated optical devices are gradually replacing the traditional large-volume refractive devices.The metasurface that can manipulate light waves in sub-wavelength scale provides a new way for designing nano-device engineering and studying related physical phenomena.A plasmonic metasurface composed of orthogonal nano-slit pairs to generate radially and azimuthally polarized vector vortex beam was designed in this paper.Based on the Huygens-Fresnel principle,the wavefield expressions of the surface plasmon polariton(SPP)in the central point area of the metasurface were derived theoretically.The results were validated by performing finite-difference time-domain simulations(FDTD).In addition,this paper used a microscopic imaging system to collect the intensity pattern of the SPP field.The experi-mental doughnut-shaped radially and azimuthally polarized vector vortex was consistent with the theoreti-cal and simulated results.关键词
超表面/矢量光束/表面等离激元/光场调控Key words
metasurface/vector beams/surface plasmon polariton/light manipulation分类
数理科学引用本文复制引用
朱邵文,杨璐瑶,崔国森,刘春香..基于等离激元超表面的径向和角向偏振矢量光束的产生[J].曲阜师范大学学报（自然科学版）,2024,50(2):115-119,5.基金项目
国家自然科学基金(62175134) （62175134）
山东师范大学大学生创新创业训练计划(S202110445039). （S202110445039）
