Imaging nanoscale features with plasmoncoupled leakage radiation far-field superlenses

Charles J. Regan, Robier Rodriguez, Shivkumar C. Gourshetty, Luis Grave De Peralta, Ayrton A. Bernussi

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

Optical images from nano-scale features were obtained by collection of leakage radiation coupled to surface plasmon polaritons excited by near-field fluorescence. Plasmonic crystals with spatial periods as small as 190 nm and non-periodic features separated by 80 nm, corresponding to ~λ/7, were clearly visible in the real plane images using this far-field technique. We show that the leaked light from the investigated samples carries detailed information to the far-field which is not present in the images obtained with conventional optical microscopy.

Original languageEnglish
Pages (from-to)20827-20834
Number of pages8
JournalOptics Express
Volume20
Issue number19
DOIs
StatePublished - Sep 10 2012

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