Imaging Ultrafast Plasmon Dynamics within a Complex Dolmen Nanostructure Using Photoemission Electron Microscopy

被引：0

作者：

秦将 ^{[1
]}

郎鹏 ^{[1
]}

季博宇 ^{[1
]}

N.K.Alemayehu ^{[1
]}

陶海岩 ^{[1
]}

高勋 ^{[1
]}

郝作强 ^{[1
]}

林景全 ^{[1
,2
]}

机构：

[1] School of Science,Changchun University of Science and Technology

[2] International Research Center for Nano Handling and Manufacturing of China,Changchun University of Science and Technology

来源：

Chinese Physics Letters | 2016年 / 11期

基金：

中国国家自然科学基金;

关键词：

of; on; as; in; Imaging Ultrafast Plasmon Dynamics within a Complex Dolmen Nanostructure Using Photoemission Electron Microscopy; that; ITR;

D O I：

暂无

中图分类号：

TN16 [电子光学仪器]; TB383.1 [];

学科分类号：

070205 ; 0803 ; 080401 ; 080501 ; 1406 ;

摘要：

We report direct nanoscale imaging of ultrafast plasmon in a gold dolmen nanostructure excited with the 7fs laser pulses by combining the interferometric time-resolved technology with the three-photon photoemission electron microscopy(PEEM).The interferometric time-resolved traces show that the plasmon mode beating pattern appears at the ends of the dimer slabs in the dolmen nanostructure as a result of coherent superposition of multiple localized surface plasmon modes induced by broad bandwidth of the ultrafast laser pulses.The PEEM measurement further discloses that in-phase of the oscillation field of two neighbor defects are surprisingly observed,which is attributed to the plasmon coupling between them.Furthermore,the control of the temporal delay between the pump and probe laser pluses could be utilized for manipulation of the near-field distribution.These findings deepen our understanding of ultrafast plasmon dynamics in a complex nanosystem.

引用

页码：86 / 90

页数：5