Open AccessTerahertz beam steering using active diffraction grating fabricated by 3D printing
Author(s) -
Joachim Seifert,
G. G. Hernandez-Cardoso,
Martín Koch,
E. Castro-Camus
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.399376
Subject(s) - terahertz radiation , optics , beam steering , diffraction , materials science , diffraction grating , grating , fabrication , diffraction efficiency , optoelectronics , deflection (physics) , beam (structure) , physics , medicine , alternative medicine , pathology
In this article, we propose variable-period diffraction gratings for terahertz frequencies. The design, fabrication and characterization of such devices are presented. Our measurements show the possibility to actively shift of the deflection angle for each frequency using this device. We also demonstrated that, when driven by a speaker, these variable gratings can be used for active beam steering with potential application in terahertz communications.