Author:
Tominaga Junji,Fons Paul,Shima Takayuki,Kurihara Kazuma,Nakano Takashi,Kolobov Alexander,Petit Stephane
Abstract
AbstractWe have demonstrated that certain chalcogenide layers within a spinning super-RENS optical disc allow to squeeze the 650 nm laser beam to a spot size as fine as 50 nm using a 15-nm chalcogenide film. The near-field light was focused at a depth of just over 30 nm after passing through a chalcogenide film. Finite-difference time-domain (FDTD) simulations also reproduced these results. We suggest that a conductive ring aperture generated in the chalcogenide layers plays an important role in the localized light focusing.
Publisher
Springer Science and Business Media LLC
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2 articles.
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