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

Opt Express. 2012 Sep 10;20(19):20827-34. doi: 10.1364/OE.20.020827.

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.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.