Enhanced transmission versus localization of a light pulse by a subwavelength metal slit
Abstract
The existence of resonant enhanced transmission and collimation of light waves by subwavelength slits in metal films [for example, see T.W. Ebbesen et al., Nature (London) 391, 667 (1998) and H.J. Lezec et al., Science, 297, 820 (2002)] leads to the basic question: Can a light pulse be enhanced and simultaneously localized in space and time by a subwavelength slit? To address this question, the spatial distribution of the energy flux of an ultrashort (femtosecond) wave-packet diffracted by a subwavelength (nanometer-size) slit was analyzed by using the conventional approach based on the Neerhoff and Mur solution of Maxwell's equations. The results show that a light pulse can be enhanced by orders of magnitude and simultaneously localized in the near-field diffraction zone at the nm- and fs-scales. Possible applications in nanophotonics are discussed.
Keywords
Cite
@article{arxiv.physics/0408013,
title = {Enhanced transmission versus localization of a light pulse by a subwavelength metal slit},
author = {S. V. Kukhlevsky and M. Mechler and L. Csapo and K. Janssens and O. Samek},
journal= {arXiv preprint arXiv:physics/0408013},
year = {2009}
}
Comments
5 figures