Detection of black body radiation using a compact terahertz imager. / Hegedus, Marius; Fedorov, Kirill; Antonov, Ilya; Karataev, Pavel; Antonov, Vladimir.
In: Applied Physics Letters, Vol. 117, 231106, 09.12.2020.Research output: Contribution to journal › Article › peer-review
Detection of black body radiation using a compact terahertz imager. / Hegedus, Marius; Fedorov, Kirill; Antonov, Ilya; Karataev, Pavel; Antonov, Vladimir.
In: Applied Physics Letters, Vol. 117, 231106, 09.12.2020.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Detection of black body radiation using a compact terahertz imager
AU - Hegedus, Marius
AU - Fedorov, Kirill
AU - Antonov, Ilya
AU - Karataev, Pavel
AU - Antonov, Vladimir
PY - 2020/12/9
Y1 - 2020/12/9
N2 - We detect terahertz radiation emitted by a blackbody object at room temperature. The probe consists of semiconductor detectors coupled tothe cold finger of a compact cryo-cooler. The detectors are narrow conductive channels in two-dimensional electron gas, which is sensitive tovariations of photon flux through the mechanism of excitation and rectification of plasma waves. The excitation has a resonant nature, withan unexpectedly narrow FWHM, below 10%. The key element of the concept is a compact cryo-platform, which enables us to use highly sensitivecryo-detectors, while keeping the system compact, 34 cm side, and mobile. We discriminate the temperature variation of the blackbodyobject as small as 1.0K at a distance of 1 m. There is room for further optimization of the detectors and optical systems to boost thetemperature resolution down to 0.5K and the operation distance to 5 m, which are needed for practical applications.
AB - We detect terahertz radiation emitted by a blackbody object at room temperature. The probe consists of semiconductor detectors coupled tothe cold finger of a compact cryo-cooler. The detectors are narrow conductive channels in two-dimensional electron gas, which is sensitive tovariations of photon flux through the mechanism of excitation and rectification of plasma waves. The excitation has a resonant nature, withan unexpectedly narrow FWHM, below 10%. The key element of the concept is a compact cryo-platform, which enables us to use highly sensitivecryo-detectors, while keeping the system compact, 34 cm side, and mobile. We discriminate the temperature variation of the blackbodyobject as small as 1.0K at a distance of 1 m. There is room for further optimization of the detectors and optical systems to boost thetemperature resolution down to 0.5K and the operation distance to 5 m, which are needed for practical applications.
U2 - 10.1063/5.0022533
DO - 10.1063/5.0022533
M3 - Article
VL - 117
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
M1 - 231106
ER -