Resonant backward scattering of light by a two-side-open subwavelength metallic slit
Abstract
The backward scattering of TM-polarized light by a two-side-open subwavelength slit in a metal film is analyzed. We show that the reflection coefficient versus wavelength possesses a Fabry-Perot-like dependence that is similar to the anomalous behavior of transmission reported in the study [Y. Takakura, Phys. Rev. Lett. \textbf{86}, 5601 (2001)]. The open slit totally reflects the light at the near-to-resonance wavelengths. In addition, we show that the interference of incident and resonantly backward-scattered light produces in the near-field diffraction zone a spatially localized wave whose intensity is 10-10 times greater than the incident wave, but one order of magnitude smaller than the intra-cavity intensity. The amplitude and phase of the resonant wave at the slit entrance and exit are different from that of a Fabry-Perot cavity.
Keywords
Cite
@article{arxiv.physics/0505211,
title = {Resonant backward scattering of light by a two-side-open subwavelength metallic slit},
author = {S. V. Kukhlevsky and M. Mechler and L. Csapo and K. Janssens and O. Samek},
journal= {arXiv preprint arXiv:physics/0505211},
year = {2013}
}
Comments
5 figures