title: Generation of diffraction-free plasmonic beams with one-dimensional Bessel profiles.
abstract: We demonstrate experimentally generation of diffraction-free plasmonic beams with zeroth- and first-order Bessel intensity profiles using axicon-like structures fabricated on gold film surfaces and designed to operate at a wavelength of 700 nm. The central beam features a very low divergence (~8π mrad) for a narrow waist of the order of one wavelength and the ability to self reconstruct, which are the main signatures of diffraction-free beams.
authors.affiliation: UANL, Facultad de Ciencias Físico-Matemáticas, San Nicolás de los Garza, Nuevo León, Mexico. cegarcia@cicese.mx
authors.forename: Cesar E
authors.initials: CE
authors.lastname: Garcia-Ortiz
authors.forename: Victor
authors.initials: V
authors.lastname: Coello
authors.forename: Zhanghua
authors.initials: Z
authors.lastname: Han
authors.forename: Sergey I
authors.initials: SI
authors.lastname: Bozhevolnyi