We investigate an approach to short and medium-range wireless communications based on the use of terahertz beams possessing an orbital angular momentum (OAM) that allows for noise-resistant broadband carrier. A the- oretical model of the proposed beams generation is developed and numerical predictions are given for propagation and visualization of complex-structured THz beams, including ones carrying a unit topological charge on a large number of spectral components of broadband terahertz radiation. The assessment method which in our case is terahertz pulse time-domain holography allows for analyzing spatio-temporal and spatio-spectral evolution of arbitrary shaped THz wave trains during their propagation in free space and interaction with obstacles.

Date Published: 31 January 2020
PDF: 8 pages
Proc. SPIE 11307, Broadband Access Communication Technologies XIV, 113070J (31 January 2020); doi: 10.1117/12.2547695

Published in SPIE Proceedings Vol. 11307:
Broadband Access Communication Technologies XIV
Benjamin B. Dingel; Katsutoshi Tsukamoto; Spiros Mikroulis, Editor(s)