Open AccessLow‐noise heterodyne detection of terahertz waves at room temperature using zero‐biased Fermi‐level managed barrier diode
Author(s) -
Ito H.,
Ishibashi T.
Publication year - 2018
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2018.5879
Subject(s) - terahertz radiation , heterodyne (poetry) , diode , noise temperature , heterodyne detection , optics , optoelectronics , amplifier , local oscillator , broadband , bandwidth (computing) , physics , materials science , phase noise , telecommunications , laser , acoustics , engineering , cmos
A Fermi‐level managed barrier (FMB) diode was used for the heterodyne detection of terahertz waves for the first time. A quasi‐optical module integrating an FMB diode and a broadband trans‐impedance amplifier exhibited an intermediate frequency bandwidth of 11 GHz. A very low noise‐equivalent‐power of 1.1 × 10 −18 W/Hz was achieved at ∼300 GHz with a very low local oscillator power of 6 × 10 −6 W.