Open AccessGraphene two terminal detector as THz mixer
Author(s) -
A. Sh. Gazaliev,
M. Moskotin,
Vsevolod Belosevich,
Maxim Rybin,
I. Gayduchenko,
G. Gol'tsman
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2086/1/012054
Subject(s) - terahertz radiation , detector , optoelectronics , heterodyne (poetry) , broadband , heterodyne detection , bandwidth (computing) , optics , antenna (radio) , intermediate frequency , radiation , transmission (telecommunications) , physics , materials science , telecommunications , radio frequency , computer science , laser , acoustics
The growing requirements for mobile communication networks (data transfer rates over 100 Gbps) makes it necessary to use carrier signal with a frequency of at least 100 GHz. This requires the development of cheap and broadband sub-terahertz (sub-THz) detectors. Here we report on our recent efforts toward the development of a heterodyne sub-THz detector based on a single layer graphene two-terminal device integrated with a bowtie antenna on a sapphire substrate. Our detector operates at frequency of 140 GHz, which corresponds to the maximum transmission of THz radiation in the Earth’s atmosphere. The heterodyne detection is achieved by quasi-optical coupling of signals from two sub-THz radiation sources to the same detector. The measured frequency bandwidth is 5.8 GHz.