A polychromatic approach to far-field superlensing at visible wavelengths.

ABSTRACT: Breaking the diffraction barrier in the visible part of the electromagnetic spectrum is of fundamental importance. Far-field subwavelength focusing of light could, for instance, drastically broaden the possibilities available in nanolithography, light-matter interactions and sensing at the nanoscale. Similarly, imaging with a nanometric resolution could result in incredible breakthroughs in soft matter and biology. There have been numerous proposals in this regard based on metamaterials, structured illumination methods or diffractive optical components. The common denominator of all these approaches resides in their monochromatic nature. Here we show that using polychromatic light in dispersive metamaterials allows us to circumvent many limitations associated with previous monochromatic ap

SUBMITTER: Lemoult F 

PROVIDER: S-EPMC3621402 | biostudies-literature | 2012 Jun

REPOSITORIES: biostudies-literature