Fractal Generalized Zone Plates
Abstract
The construction of fractal generalized zone plates (FraGZPs) from a set of periodic diffractive optical elements with circular symmetry is proposed. This allows us to increase the number of foci of a conventional fractal zone plate (FraZP), keeping the self-similarity property within the axial irradiance. The focusing properties of these fractal diffractive optical elements for points not only along but also in the close vicinity of the optical axis are investigated. In both cases analytical expressions for the irradiance are derived. Numerical simulations of the energetic efficiency of FraGZPs under plane wave illumination are carried out. In addition, some effects on the axial irradiance caused by the variation in area of their transparent rings are shown.
Cite
@article{arxiv.0811.0343,
title = {Fractal Generalized Zone Plates},
author = {Omel Mendoza-Yero and Mercedes Fernandez-Alonso and Gladys Minguez-Vega and Jesus Lancis and Vicent Climent and Juan A. Monsoriu},
journal= {arXiv preprint arXiv:0811.0343},
year = {2015}
}
Comments
Submitted to Optics Express, 2008