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Direct Near-Field Optical Imaging of Higher Order Plasmonic Resonances

Ruben Esteban ; Ralf Vogelgesang ; Jens Dofrmueller ; Alexandre Dmitriev (Institutionen för teknisk fysik, Bionanofotonik) ; Carsten Rockstuhl ; Christian Etrich ; Klaus Kern
Nano Lett. Vol. 8 (2008), p. 3155.
[Artikel, refereegranskad vetenskaplig]

We map in real space and by purely optical means near-field optical information of localized surface plasmon polariton (LSPP) resonances excited in nanoscopic particles. We demonstrate that careful polarization control enables apertureless scanning near-field optical microscopy (aSNOM) to image dipolar and quadrupolar LSPPs of the bare sample with high fidelity in both amplitude and phase. This establishes a routine method for in situ optical microscopy of plasmonic and other resonant structures under ambient conditions.



Denna post skapades 2008-12-22.
CPL Pubid: 82587

 

Institutioner (Chalmers)

Institutionen för teknisk fysik, Bionanofotonik (2007-2015)

Ämnesområden

Fysik
Optik

Chalmers infrastruktur