Open AccessGenerating terahertz perfect optical vortex beams by diffractive elements
Author(s) -
Yongqiang Yang,
Xi Yang,
Liting Niu,
Kejia Wang,
Zhengang Yang,
Jinsong Liu
Publication year - 2020
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.380076
Subject(s) - terahertz radiation , optics , physics , radius , optical vortex , vortex , diffraction , light beam , topological quantum number , beam (structure) , computer science , computer security , quantum mechanics , thermodynamics
An effective experiment scheme is proposed to generate the terahertz (THz) perfect optical vortex (POV) beams by diffractive elements at the frequency of 0.1THz. Two diffractive elements are designed and fabricated by 3D-printing to form the generation system. The ring radius of the generated beams is independent of the topological charge and positive linear relationship with the radial wave vector. By controlling the radial wave vector, the ring radius can be freely adjusted. The experiment results are shown to corroborate the numerical simulation ones. Such generated beams hold promise for developing the novel THz fiber communication systems.