Abstract
It has been predicted theoretically and demonstrated experimentally that a planar slab supporting surface plasmons or surface phonon polaritons can behave as a super lens. However, the resolution is limited by the losses of the slab. In this Letter, we point out that the resolution limit imposed by losses can be overcome by using time-dependent illumination.
- Received 5 July 2012
DOI:https://doi.org/10.1103/PhysRevLett.109.097405
© 2012 American Physical Society
Synopsis
Time-Dependent Fields Improve Superlens Resolution
Published 30 August 2012
A thin metal slab known as a superlens, which focuses light more sharply than its wavelength, could have an even higher resolution imaging rapidly varying electromagnetic fields.
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