典型文献
Ultrafast low-pump fluence all-optical modulation based on graphene-metal hybrid metasurfaces
文献摘要：
Graphene is an attractive material for all-optical modulation because of its ultrafast optical response and broad spectral coverage.However,all-optical graphene modulators reported so far require high pump fluence due to the ultrashort photo-carrier lifetime and limited absorption in graphene.We present modulator designs based on graphene-metal hybrid plasmonic metasurfaces with highly enhanced light-graphene interaction in the nanoscale hot spots at pump and probe(signal)wavelengths.Based on this design concept,we have demonstrated high-speed all-optical modulators at near and mid-infrared wavelengths(1.56 pm and above 6 pm)with significantly reduced pump fluence(1-2 orders of magnitude)and enhanced optical modulation.Ultrafast near-infrared pump-probe measurement results suggest that the modulators'response times are ultimately determined by graphene's ultrafast photocarrier relaxation times on the picosecond scale.The proposed designs hold the promise to address the challenges in the realization of ultrafast all-optical modulators for mid-and far-infrared wavelengths.
文献关键词：
中图分类号：
作者姓名：
Ali Basiri;Md Zubair Ebne Rafique;Jing Bai;Shinhyuk Choi;Yu Yao
作者机构：
School of Electrical,Computer and Energy Engineering,Arizona State University,Tempe,AZ,USA;Center for Photonic Innovation,Arizona State University,Tempe,AZ,USA
文献出处：
引用格式：
[1]Ali Basiri;Md Zubair Ebne Rafique;Jing Bai;Shinhyuk Choi;Yu Yao-.Ultrafast low-pump fluence all-optical modulation based on graphene-metal hybrid metasurfaces)[J].光：科学与应用（英文版）,2022(05):911-924
A类：
B类：
Ultrafast,low,pump,fluence,optical,modulation,graphene,metal,hybrid,metasurfaces,Graphene,attractive,material,because,its,ultrafast,response,broad,spectral,coverage,However,modulators,reported,far,require,due,ultrashort,lifetime,limited,absorption,We,present,designs,plasmonic,highly,enhanced,light,interaction,nanoscale,spots,probe,signal,wavelengths,Based,this,concept,have,demonstrated,speed,near,mid,infrared,pm,above,significantly,reduced,orders,magnitude,measurement,results,suggest,that,times,ultimately,determined,by,photocarrier,relaxation,picosecond,proposed,hold,promise,address,challenges,realization
AB值：
0.499148
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。
