Open AccessNumerical analysis of optical vortices generation with nanostructured phase masks
Author(s) -
Hoa Thi Nguyen,
Alicja Anuszkiewicz,
Jolanta Lisowska,
Adam Filipkowski,
Rafał Kasztelanic,
Ryszard Buczyński,
Wiesław Królikowski
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.397117
Subject(s) - refractive index , optics , materials science , optical vortex , vortex , refractive index contrast , phase (matter) , nanorod , phase contrast imaging , phase modulation , optoelectronics , phase contrast microscopy , physics , nanotechnology , fabrication , phase noise , medicine , beam (structure) , alternative medicine , pathology , quantum mechanics , thermodynamics
We study the theoretical formation of optical vortices using a nanostructured gradient index phase mask. We consider structures composed of spatially distributed thermally matched glass nanorods with high and low refractive indices. Influence of effective refractive profile distribution, refractive index contrast of component glasses and charge value on the quality of generation of vortices are discussed. A trade-off between waveguiding and phase modulation effects for various refractive index contrast is presented and analysed.