典型文献
Active terahertz beam manipulation with photonic spin conversion based on a liquid crystal Pancharatnam-Berry metadevice
文献摘要：
Active terahertz(THz)beam manipulation is urgently needed for applications in wireless communication,radar detection,and remote sensing.In this work,we demonstrate a liquid crystal(LC)integrated Pancharatnam-Berry(PB)metadevice for active THz beam manipulation.Through theoretical analysis and simulation design,the geometric phase of the PB metasurface is engineered to match the tunable anisotropic phase shift of LCs under an external magnetic field,and dynamic beam deflection accompanied by spin conversion is obtained.The experimental results show that the device realizes a dynamic modulation depth of＞94％and maximum efficiency of over 50％for the different spin states.Moreover,due to the broadband operating characteristics of devices at 0.7-1.3 THz,the deflection angles are frequency dependent with a scanning range of over±20° to±32.5°.Moreover,the two conjugate spin states are always spatially separated in different deflection directions with an isolation degree of over 10 dB.Therefore,this metadevice provides a scheme of active THz beam deflection and spin state conversion,and it also achieves both controllable wavelength division multiplexing and spin di-vision multiplexing,which have important potential in large-capacity THz wireless communication.
文献关键词：
中图分类号：
作者姓名：
HUI-JUN ZHAO;FEI FAN;YUN-YUN JI;SONG-LIN JIANG;ZHI-YU TAN;SHENG-JIANG CHANG
作者机构：
Institute of Modern Optics,Nankai University,Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology,Tianjin 300350,China;Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology,Tianjin 300350,China
文献出处：
引用格式：
[1]HUI-JUN ZHAO;FEI FAN;YUN-YUN JI;SONG-LIN JIANG;ZHI-YU TAN;SHENG-JIANG CHANG-.Active terahertz beam manipulation with photonic spin conversion based on a liquid crystal Pancharatnam-Berry metadevice)[J].光子学研究（英文）,2022(11):2658-2666
A类：
B类：
Active,terahertz,beam,manipulation,photonic,spin,conversion,liquid,crystal,Pancharatnam,Berry,metadevice,THz,urgently,needed,applications,wireless,communication,radar,detection,remote,sensing,In,this,work,we,demonstrate,integrated,PB,active,Through,theoretical,analysis,simulation,design,geometric,phase,metasurface,engineered,match,tunable,anisotropic,shift,LCs,under,external,magnetic,field,dynamic,deflection,accompanied,by,obtained,experimental,results,show,that,realizes,modulation,depth,maximum,efficiency,different,states,Moreover,due,broadband,operating,characteristics,devices,angles,are,frequency,dependent,scanning,range,two,conjugate,always,spatially,separated,directions,isolation,degree,dB,Therefore,provides,scheme,also,achieves,both,controllable,wavelength,division,multiplexing,which,have,important,potential,large,capacity
AB值：
0.574604
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
