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典型文献
Design of broadband achromatic metasurface device based on phase-change material Ge2Sb2Te5
文献摘要：
Based on the phase-change material Ge2Sb2Te5(GST),achromatic metasurface optical device in the longer-infrared wavelength is designed.With the combination of the linear phase gradient GST nanopillar and the adjustment of the crystalline fraction m value of GST,the polarization insensitive achromic metalenses and beam deflector metasurface within the longer-infrared wavelength 9.5 μm to 13 μm are realized.The design results show that the achromatic metalenses can be focused on the same focal plane within the working waveband.The simulation calculation results show that the full-width at half-maximum(FWHM)of the focusing spot reaches the diffraction limit at each wavelength.In addition,the same method is also used to design a broadband achromatic beam deflector metasurface with the same deflection angle of 19°.The method proposed in this article not only provides new ideas for the design of achromatic metasurfaces,but also provides new possibilities for the integration of optical imaging,optical coding and other related optical systems.
文献关键词：
中图分类号：
[1] 数理科学和化学（O） / 力学（O3） / 振动理论（O32） / 非线性振动（O322）
[2] 自动化技术、计算机技术（TP） / 计算技术、计算机技术（TP3） / 计算机的应用（TP39） / 信息处理(信息加工)（TP391）
[3] 医药、卫生（R） / 药学（R9） / 药理学（R96） / 实验药理学（R965）
作者姓名：
Shuyuan Lv;Xinhui Li;Wenfeng Luo;Jie Jia
作者机构：
Xi'an University of Posts&Telecommunications,School of Electronic Engineering,Xi'an 710121,China
文献出处：
中国物理B（英文版）
引用格式：
[1]Shuyuan Lv;Xinhui Li;Wenfeng Luo;Jie Jia-.Design of broadband achromatic metasurface device based on phase-change material Ge2Sb2Te5)[J].中国物理B（英文版）,2022(12):427-433
A类：
nanopillar,achromic
B类：
Design,broadband,achromatic,device,phase,change,material,Ge2Sb2Te5,Based,GST,optical,longer,infrared,wavelength,designed,With,combination,linear,gradient,adjustment,crystalline,value,polarization,insensitive,metalenses,beam,deflector,within,realized,results,show,that,can,focused,same,focal,plane,working,waveband,simulation,calculation,full,width,half,maximum,FWHM,focusing,spot,reaches,diffraction,limit,In,addition,method,also,deflection,angle,proposed,this,article,not,only,provides,new,ideas,metasurfaces,but,possibilities,integration,imaging,coding,other,related,systems
AB值：
0.493941
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