Diffraction-free beams in thin films
Optics
2016-01-20 v1 Classical Physics
Abstract
The propagation and transmission of Bessel beams through nano-layered structures has been discussed recently. Within this framework we recognize the formation of unguided diffraction-free waves with the spot size approaching and occasionally surpassing the limit of a wavelength when a Bessel beam of any order n is launched onto a thin material slab with grazing incidence. Based on the plane-wave representation of cylindrical waves, a simple model is introduced providing an exact prescription of the transverse pattern of this type of diffraction-suppressed localized waves. Potential applications in surface science are put forward for consideration.
Cite
@article{arxiv.0910.5642,
title = {Diffraction-free beams in thin films},
author = {Carlos J. Zapata-Rodriguez},
journal= {arXiv preprint arXiv:0910.5642},
year = {2016}
}