基于双尺度4分离层优化的石墨烯太赫兹宽带吸波结构  

Wide-band terahertz absorbing structure with graphene based on dual-scale four separation layers optimization

作　　者：檀立刚 骆明伟[1] 李捷[1] TAN Ligang;LUO Mingwei;LI Jie(Technological Innovation Center,Sichuan Jiuzhou Electric Group Co.,Ltd.,Mianyang 621000,China)

机构地区：[1]四川九洲电器集团有限责任公司技术创新中心,四川绵阳621000

出　　处：《应用光学》2023年第1期6-16,共11页Journal of Applied Optics

基　　金：某纵向预研项目(2019408XXXX)。

摘　　要：为实现对未来远程太赫兹雷达的高效对抗与隐身,针对典型太赫兹雷达工作频率设计了一种石墨烯太赫兹宽带吸波结构。宽带吸波结构以表层金属层/石墨烯层/介质层/底层金属层为基本吸波结构单元,利用遗传算法对双尺度基本吸波结构单元进行4分离层优化设计,确定宽带吸波结构的各层结构参数。仿真结果表明:宽带吸波结构在0.138 THz~2 THz频率范围内吸收效率优于80%,在0.157 THz~2 THz频率范围内吸收效率优于97.46%,典型太赫兹雷达工作频率处吸收效率均优于92.27%,满足太赫兹雷达对抗与隐身要求。To realize high-efficiency countermeasures and stealth for future remote terahertz radar, a wide-band terahertz absorbing structure with graphene was designed for typical operating frequencies of terahertz radar.The basic absorbing structure unit of wide-band absorbing structure was the surface metal layer/graphene layer/dielectric layer/bottom metal layer, and the dual-scale four separation layers were designed and optimized to certain the structure parameters of each layer using the genetic algorithm. Simulation results show that the absorption efficiency of wide-band absorbing structure is better than 80% in the frequency range of 0.138 THz~2 THz, 97.46% in the frequency range of 0.157 THz~2 THz, and 92.27% at the typical terahertz radar operating frequency, which satisfy the demands of countermeasures and stealth for terahertz radars.

关 键 词：太赫兹雷达 石墨烯 隐身对抗 宽带吸收 

分 类 号：TN202[电子电信—物理电子学] O43[机械工程—光学工程]