太赫兹科学与电子信息学报2026,Vol.24Issue(5):624-634,11.DOI:10.11805/TKYDA2025042
太赫兹波段超构透镜变焦功能的研究
Research on the focal length variation of metalens at terahertz band
摘要
Abstract
Based on phase-transmission theory,a transmissive terahertz metalens whose wavefront is shaped by cross-shaped elliptical cylinders is designed.The lens uses a cyclo-olefin-polymer substrate and silicon scatterers,has an 11 mm radius,operates at 0.75 mm wavelength,delivers a 0.69 numerical aperture and 51.4%focusing efficiency.Within ambient refractive indices of 1~1.6 and wavelengths of 0.7~0.8 mm,the focal length scales directly with index and inversely with wavelength,enabling continuous zoom by simply tuning the surroundings or the incident frequency.关键词
超构透镜/太赫兹波段/环境折射率/入射波长Key words
metalens/terahertz band/environmental index/incident wavelength分类
信息技术与安全科学引用本文复制引用
张晓冬,朱雪,吴鑫鹏,刘若涵,孔德鹏,姜利英..太赫兹波段超构透镜变焦功能的研究[J].太赫兹科学与电子信息学报,2026,24(5):624-634,11.基金项目
国家自然科学基金面上资助项目(62477043) (62477043)
国家留学基金委资助项目(202409440003) (202409440003)
河南省科技厅科技攻关资助项目(232102211081) (232102211081)
河南省科技研发计划联会基金资助项目(225200810071) (225200810071)
河南省重大科技专项资助项目(231100220800) (231100220800)
河南省高等学校重点科研项目计划基础研究专项资助项目(26ZX021) (26ZX021)