Open Access3D-printed diffractive elements induced accelerating terahertz Airy beam
Author(s) -
Changming Liu,
Liting Niu,
Kejia Wang,
Jinsong Liu
Publication year - 2016
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.24.029342
Subject(s) - terahertz radiation , airy beam , optics , beam (structure) , physics , diffraction , terahertz spectroscopy and technology , fourier transform , quantum mechanics
We first demonstrate the accelerating terahertz (THz) Airy beam with a 0.3-THz continuous wave. Two diffractive elements are designed and 3D-printed to form the generation system, which cannot only imprint the desired complex phase pattern but also perform the required Fourier transform (FT). We both numerically and experimentally demonstrate the propagation dynamics of the accelerating THz Airy beam and investigate its self-healing property during propagation in the free space. Our observations are in good agreement with the numerical simulations. Such an accelerating THz Airy beam could be able to develop novel THz imaging systems and robust THz communication links.