基于激光诱导石墨烯的太赫兹超材料滤波器
Terahertz Metamaterial Filter Based on Laser-Induced Graphene
张绪 1宋瑞琦 1宗顾卫 1吴双悦 1王磊2
作者信息
- 1. 南京邮电大学电子与光学工程学院,柔性电子(未来技术)学院,江苏 南京 210023
- 2. 南京邮电大学电子与光学工程学院,柔性电子(未来技术)学院,江苏 南京 210023;东南大学毫米波国家重点实验室,江苏 南京 210096;南京大学固体微结构物理国家重点实验室,江苏 南京 210093
- 折叠
摘要
设计并制备了一种基于激光诱导石墨烯(LIG)的太赫兹超材料滤波器.首先,研究了不同激光加工参数下生成LIG的电学特性,然后通过太赫兹时域光谱仪测得滤波器的透射性能.当结构单元周期为 500 μm时,滤波器在0.55 THz处的透射率为74.2%.通过改变滤波器的结构周期,中心频率可增至0.65 THz.该滤波器同时具有振幅偏振相关特性,随着入射太赫兹波偏振方向与x轴夹角θ的增加,其透射率逐渐降低.LIG法制备简单、成本低廉,有望用于制备各种太赫兹超材料器件,在太赫兹传感、探测和通信等领域有着一定的应用前景.
Abstract
In this study,a terahertz metamaterial filter based on laser-induced graphene(LIG)is proposed.The electrical properties of the LIG under different laser parameters are investigated,and the transmission performance of the filter is measured using terahertz time-domain spectroscopy.The transmittance of the filter is 74.2%at 0.55 THz when the period of the filter unit is 500 μm.By changing the period of the filter,the center frequency can be increased to 0.65 THz.Furthermore,the characteristic of the filter amplitude is polarization-dependent.As the angle θ between the polarization direction of the incident terahertz waves and the x-axis increases,the transmittance of the filter decreases gradually.This simple and low-cost LIG method is expected to be used to prepare various terahertz metamaterial devices,which can be applied in many fields such as terahertz sensing,detection,and communication.
关键词
太赫兹/超材料/滤波器/激光诱导石墨烯Key words
terahertz/metamaterial/filter/laser-induced graphene引用本文复制引用
基金项目
江苏省自然科学基金(BK20211277)
固体微结构物理国家重点实验室开放基金(M35039)
毫米波国家重点实验室开放基金(K202226)
出版年
2024
NETL
NSTL
万方数据