THz-photonics transceivers by all-dielectric phonon-polariton nonlinear nanoantennas

Year: 2022

Authors: Leon UA., Rocco D., Carletti L., Peccianti M., Maci S., Della Valle G., De Angelis C.

Autors Affiliation: Politecn Milan, Dept Phys, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy; Univ Brescia, Dept Informat Engn, Via Branze 38, I-25123 Brescia, Italy; CNR, Natl Inst Opt, Via Branze 45, I-25123 Brescia, Italy; Univ Sussex, Dept Phys & Astron, Emergent Photon Lab EPic, Brighton BN1 9QH, E Sussex, England; Univ Siena, Dept Informat Engn & Math, I-53100 Siena, Italy; CNR, Inst Photon & Nanotechnol, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy.

Abstract: The THz spectrum (spanning from 0.3 to 30 THz) offers the potential of a plethora of applications, ranging from the imaging through non transparent media to wireless-over-fiber communications and THz-photonics. The latter framework would greatly benefit from the development of optical-to-THz wavelength converters. Exploiting Difference Frequency Generation in a nonlinear all dielectric nanoantenna, we propose a compact solution to this problem. By means of a near-infrared pump beam (at omega(1)), the information signal in the optical domain (at omega(2)) is converted to the THz band (at omega(3) = omega(2) – omega(1)). The approach is completely transparent with respect to the modulation format, and can be easily integrated in a metasurface platform for simultaneous frequency and spatial moulding of THz beams.

Journal/Review: SCIENTIFIC REPORTS

Volume: 12 (1)      Pages from: 4590-1  to: 4590-11

More Information: This work was supported by the European Commission Horizon 2020 H2020-FETOPEN2018-2020 (899673); the National Research Council, Joint Laboratories program (SAC.AD002.026); the Italian Ministry of University and Research (2017MP7F8F).
KeyWords: Optical Rectification; Terahertz Spectroscopy; Generation; Pulses; System
DOI: 10.1038/s41598-022-08695-y

Citations: 13
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