1.
Opt Lett
; 40(21): 5058-61, 2015 Nov 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-26512518
RESUMO
A new method is presented for visualizing the electric field distributions associated with propagating surface-plasmon-polariton (SPP) modes directly in the near-field. The method is based on detecting the photo-induced gradient force exerted by the evanescent field onto a sharp and polarizable tip. Using a photo-induced force microscope (PiFM), images of propagating SPPs are obtained on flat gold surfaces.