Disclosing transverse spin angular momentum of surface plasmon polaritons through independent spatiotemporal imaging of its in-plane and out-of-plane electric field components

2020 ◽  
Vol 8 (6) ◽  
pp. 1042
Author(s):  
Yulu Qin ◽  
Boyu Ji ◽  
Xiaowei Song ◽  
Jingquan Lin
Keyword(s):  
Angular Momentum ◽  
Electric Field ◽  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Transverse Spin ◽  
Spin Angular Momentum ◽  
Out Of Plane ◽  
Plasmon Polaritons

“Seeing” the Resonant SPP Modes Confined in Metal Nanocavity via Cathodoluminescne Spectroscopy

2014 ◽  
Vol 1659 ◽  
pp. 83-94
Author(s):  
Liu Chuanpu ◽  
Zhu Xinli ◽  
Zhang Jiasen ◽  
Xu Jun ◽  
Yu Dapeng
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Strong Field ◽  
Three Dimensional ◽  
Metal Nanostructures ◽  
Feature Size ◽  
Practical Applications ◽  
Plane Field ◽  
Out Of Plane ◽  
Plasmon Polaritons

ABSTRACT:Surface plasmon polaritons (SPPs), which are coupled excitations of electrons bound to a metal-dielectric interface, show great potential for application in future nanoscale photonic systems due to the strong field confinement at the nanoscale, intensive local field enhancement, and interplay between strongly localized and propagating SPPs. The fabrication of sufficiently smooth metal surface with nanoscale feature size is crucial for SPPs to have practical applications. A template stripping (ST) method combined with PMMA as a template was successfully developed to create extraordinarily smooth metal nanostructures with a desirable feature size and morphology for plasmonics and metamaterials. The advantages of this method, including the high resolution, precipitous top-to bottom profile with a high aspect ratio, and three-dimensional characteristics, make it very suitable for the fabrication of plasmonic structures. By using this ST method, boxing ring-shaped nanocavities have been fabricated and the confined modes of surface plasmon polaritons in these nanocavities have been investigated and imaged by using cathodoluminescence (CL) spectroscopy, which has been turned out to be a powerful means to characterize the resonant SPPs modes confined in metal nanocavities [1∼5] . The mode of the out-of-plane field components of surface plasmon polaritons dominates the experimental mode patterns, indicating that the electron beam locally excites the out-of-plane field component of surface plasmon polaritons. Quality factors can be directly acquired from the spectra induced by the ultrasmooth surface of the cavity and the high reflectivity of the silver (Ag) reflectors. Because of its three-dimensional confined characteristics and the omnidirectional reflectors, the nanocavity exhibits a small modal volume, small total volume, rich resonant modes, and flexibility in mode control. Numerous applications, such as plasmonic filter, nanolaser, and efficient light-emitting devices, can be expected to arise from these developments.

scholarly journals Encoding photonic angular momentum information onto surface plasmon polaritons with plasmonic lens

2012 ◽  
Vol 20 (22) ◽  
pp. 24151 ◽  
Author(s):  
Aiping Liu ◽  
Guanghao Rui ◽  
Xifeng Ren ◽  
Qiwen Zhan ◽  
Guangcan Guo ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Plasmonic Lens ◽  
Plasmon Polaritons

Dispersion, propagation, and transverse spin of surface plasmon polaritons in a metal-chiral-metal waveguide

2017 ◽  
Vol 110 (16) ◽  
pp. 161114 ◽  
Author(s):  
Qiang Zhang ◽  
Junqing Li ◽  
Xingguang Liu ◽  
Demissie J. Gelmecha
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Transverse Spin ◽  
Metal Waveguide ◽  
Plasmon Polaritons
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