Highly localized accelerating beams using nano-scale metallic gratings


Autoria(s): Naserpour, Mahin; Zapata Rodríguez, Carlos Javier; Zakery, Abdolnaser; Miret, Juan Jose
Contribuinte(s)

Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía

Óptica y Ciencias de la Visión

Data(s)

16/09/2016

16/09/2016

01/01/2015

Resumo

Spatially accelerating beams are non-diffracting beams whose intensity is localized along curvilinear trajectories, also incomplete circular trajectories, before diffraction broadening governs their propagation. In this paper we report on numerical simulations showing the conversion of a high-numerical-aperture focused beam into a nonparaxial shape-preserving accelerating beam having a beam-width near the diffraction limit. Beam shaping is induced near the focal region by a diffractive optical element that consists of a non-planar subwavelength grating enabling a Bessel signature.

This research was funded by the Spanish Ministry of Economy and Competitiveness under the project TEC2011-29120-C05-01. M. Naserpour acknowledges financial support from the Ministry of Science, Research and Technology of Iran.

Identificador

Optics Communications. 2015, 334: 79-84. doi:10.1016/j.optcom.2014.08.024

0030-4018 (Print)

1873-0310 (Online)

http://hdl.handle.net/10045/57947

10.1016/j.optcom.2014.08.024

Idioma(s)

eng

Publicador

Elsevier

Relação

http://dx.doi.org/10.1016/j.optcom.2014.08.024

Direitos

© 2014 Elsevier B.V.

info:eu-repo/semantics/restrictedAccess

Palavras-Chave #Wave propagation #Invariant optical fields #Diffraction theory #Óptica
Tipo

info:eu-repo/semantics/article