宽带吸收与极化转换可切换的太赫兹超表面OA北大核心CSTPCD
Switchable ultra-broadband absorption and polarization conversion terahertz metasurface
本文提出一种具有宽带吸收与极化转换可切换的太赫兹超表面,通过调节二氧化钒电导率可实现太赫兹波吸收和极化转换功能灵活切换.当二氧化钒处于金属状态时,该超表面表现为宽带吸收器,在6.32-18.06 THz范围吸收率大于90％,相对带宽为96.3％.当二氧化钒为绝缘状态时,该结构在2.41-3.42 THz,4.78-7.48 THz和9.53-9.73 THz频率范围表现为极化转换器,极化转换率大于90％.该超表面结构可以用于太赫兹波探测、太赫兹通…查看全部>>
Metasurfaces can realize flexible modulation of electromagnetic waves at the wavelength level.However,the reported functions of metasurface are usually fixed and cannot be changed,once its structural design is completed.The designed metasurface cannot meet the requirements for flexible regulation of terahertz waves.We find that the phase change material of vanadium dioxide can achieve a transition from insulating state to metallic state through thermal,elect…查看全部>>
王丹;李九生;郭风雷
中国计量大学太赫兹研究所,杭州 310018中国计量大学太赫兹研究所,杭州 310018中国计量大学太赫兹研究所,杭州 310018
太赫兹超表面宽带吸收极化转换
terahertzmetasurfacebroadband absorptionpolarization conversion
《物理学报》 2024 (14)
275-282,8
国家自然科学基金(批准号:62271460)和浙江省自然科学基金(批准号:LZ24F050005)资助的课题. Project supported by the National Natural Science Foundation of China(Grant No.62271460)and the Natural Science Foundation of Zhejiang Province,China(Grant No.LZ24F050005).
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