Loss compensation of surface plasmon polaritons in organic/metal nanowire heterostructures toward photonic logic processing  

有机/金属纳米线异质结中的SPPs损耗补偿用于光学逻辑运算

作　　者：Yuanchao Lv Fa Feng Xu Kang Wang Yong Jun Li Yong Sheng Zhao 吕远超;徐法峰;王康;李勇军;赵永生(Key Laboratory of Photochemistry,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China;Fujian Provincial Key Laboratory of Polymer Materials,College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350007,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]Key Laboratory of Photochemistry,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China [2]Fujian Provincial Key Laboratory of Polymer Materials,College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350007,China [3]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Science China Materials》2020年第8期1464-1471,共8页中国科学（材料科学（英文版）

基　　金：supported by the Ministry of Science and Technology of China(2017YFA0204502);the National Natural Science Foundation of China(21533013 and 21790364)。

摘　　要：Surface plasmon polaritons(SPPs)are crucial for the development of next generation information and communication technologies.However,the ohmic losses inherent to all plasmonic devices seriously limit their practical application in on-chip photonic communications.Here,loss compensation of SPPs and their application in photonic logic processing was demonstrated in rationally designed organic/silver nanowire heterostructures.The heterostructures were synthesized by inserting silver nanowires(AgNWs)into crystalline organic microwires,which served as a microscale optical gain medium.These heterostructures with large organic/metal interfacial areas ensured the efficient energy transfer from excitons to SPPs.Gain for subwavelength SPPs in the heterostructure was achieved through stimulated emission of strongly confined SPPs.Furthermore,cascade gain was performed to realize basic nanoscale photonic devices,such as Boolean logic units.The results would pave an alternative avenue to incorporating SPP-enhanced devices into hybrid photonic circuitry.表面等离子体激元(SPPs)对于下一代信息通信技术的发展至关重要.然而,SPPs器件固有的欧姆损耗限制了它们在片上光学通讯中的实际应用.本工作中,我们在合理设计的有机/金属纳米线异质结中实现了SPPs的损耗补偿及其在光学逻辑运算中的应用.通过将银纳米线(AgNWs)插入结晶有机微丝中来合成异质结构,并将其用作微米级光学增益介质.所制备的异质结具有较大的有机/金属界面面积,能确保从激子到SPPs的高效能量转移.异质结构中亚波长SPPs的增益是通过强烈限制SPPs的受激发射实现的.此外,我们还实现了SPPs的级联增益,并将其用于构建微纳光子学器件,例如Boolean逻辑单元.相关结果为具有SPPs增强功能的器件用于混合光子学回路提供了新的思路.

关 键 词：surface plasmon nanowire heterostructure organic nanowire loss compensation 

分 类 号：O53[理学—等离子体物理] TB383.1[理学—物理]