Imaging nanoscale features with plasmon-coupled leakage radiation far-field superlenses

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 clea...

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Bibliographic Details
Published in:Optics express 2012-09, Vol.20 (19), p.20827-20834
Main Authors: Regan, Charles J, Rodriguez, Robier, Gourshetty, Shivkumar C, Grave de Peralta, Luis, Bernussi, Ayrton A
Format: Article
Language:English
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Summary: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.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.20.020827