Abstract

We propose a method to design and realize planar Bessel lens using artificial metasurfaces to produce diffraction-free surface waves. The planar Bessel lens is composed of two sublenses: a half Maxwell fisheye lens which can shape the surface cylindrical waves to surface plane waves, and an inhomogeneous flat lens which can convert the surface plane waves into approximate diffraction-free surface waves in a diamond-shaped focusing area. Through the planar Bessel lens, a point source on the metasurface directly radiates the diffraction-free surface waves. In realization, we construct the inhomogeneous metasurfaces by subwavelength metallic patches printed on a grounded dielectric substrate. Simulation and experimental results have good agreements, which jointly show the formation of the diffraction-free surface waves in the microwave band.

© 2014 Optical Society of America

Asymmetric surface wave excitation through metasurface-edge diffraction

Miguel Camacho, Filippo Capolino, and Matteo Albani
Opt. Lett. 45(19) 5420-5423 (2020)

Wave manipulation with designer dielectric metasurfaces

Jierong Cheng, Davood Ansari-Oghol-Beig, and Hossein Mosallaei
Opt. Lett. 39(21) 6285-6288 (2014)

Combining label-free and fluorescence operation of Bloch surface wave optical sensors

Alberto Sinibaldi, Antonio Fieramosca, Riccardo Rizzo, Aleksei Anopchenko, Norbert Danz, Peter Munzert, Claudio Magistris, Claudia Barolo, and Francesco Michelotti
Opt. Lett. 39(10) 2947-2950 (2014)

Lenses on curved surfaces

R. C. Mitchell-Thomas, O. Quevedo-Teruel, T. M. McManus, S. A. R. Horsley, and Y. Hao
Opt. Lett. 39(12) 3551-3554 (2014)

Highly efficient wavefront manipulation in terahertz based on plasmonic gradient metasurfaces

Jun Luo, Honglin Yu, Maowen Song, and Zuojun Zhang
Opt. Lett. 39(8) 2229-2231 (2014)