eprintid: 10190664
rev_number: 6
eprint_status: archive
userid: 699
dir: disk0/10/19/06/64
datestamp: 2024-04-12 04:52:19
lastmod: 2024-04-12 04:52:19
status_changed: 2024-04-12 04:52:19
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Aita, Vittorio
creators_name: Shevchenko, Mykyta
creators_name: Rodríguez-Fortuño, Francisco J
creators_name: Zayats, Anatoly V
title: Propagation of focused scalar and vector vortex beams in anisotropic media: A semianalytical approach
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F46
note: Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
abstract: In the field of structured light, the study of optical vortices and their vectorial extension—vectorial vortex beams—has garnered substantial interest due to their unique phase and polarization properties, which make them appealing for many potential applications. Combining the advantages of vortex beams and anisotropic materials, unique possibilities for electromagnetic field tailoring and manipulation can be achieved in nonlinear optics, quantum and topological photonics. These applications call for a comprehensive modeling framework that accounts for properties of both anisotropic materials and vector vortex beams. In this paper, we describe a semianalytical model that extends the vectorial diffraction theory to the case of focused vortex beams propagating through a uniaxial slab, considering both the cases of scalar and vectorial vortices in the common framework of a Laguerre-Gaussian mode basis. The model aims to provide a comprehensive description of the methodology, enabling the implementation of complex beam transmission through, reflection from, and propagation in uniaxial anisotropic materials for specific applications. As a demonstration of its versatility, we apply the developed approach to describe propagation of high-order vortex beams in uniaxial materials with various dispersion characteristics, exploring the elliptic, hyperbolic and epsilon-near-zero regimes. We show how variations of the medium anisotropy modify the beam structure due to the vectorial nature of their interaction, which results from the different permittivities of the medium for transverse and longitudinal field components. The applicability of the approach can be extended to artificially structured media if they can be described by effective medium parameters. The developed formalism will be useful for modeling interaction of complex beams with uniaxial materials, allowing a common framework for a large variety of situations, which can also be extended beyond the electromagnetic waves.
date: 2024-03-29
date_type: published
publisher: American Physical Society (APS)
official_url: http://dx.doi.org/10.1103/physrevb.109.125433
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 2267335
doi: 10.1103/physrevb.109.125433
lyricists_name: Shevchenko, Mykyta
lyricists_id: MSHEV65
actors_name: Shevchenko, Mykyta
actors_id: MSHEV65
actors_role: owner
full_text_status: public
publication: Physical Review B
volume: 109
number: 12
article_number: 125433
issn: 2469-9950
citation:        Aita, Vittorio;    Shevchenko, Mykyta;    Rodríguez-Fortuño, Francisco J;    Zayats, Anatoly V;      (2024)    Propagation of focused scalar and vector vortex beams in anisotropic media: A semianalytical approach.                   Physical Review B , 109  (12)    , Article 125433.  10.1103/physrevb.109.125433 <https://doi.org/10.1103/physrevb.109.125433>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10190664/1/PhysRevB.109.125433.pdf