Noise temperature and local oscillator power requirement of NbN phonon-cooled hot electron bolometric mixers at terahertz frequencies

1998 ◽  
Vol 73 (19) ◽  
pp. 2814-2816 ◽  
Author(s):  
P. Yagoubov ◽  
M. Kroug ◽  
H. Merkel ◽  
E. Kollberg ◽  
G. Gol’tsman ◽  
...  
Keyword(s):  
Noise Temperature ◽  
Local Oscillator ◽  
Hot Electron ◽  
Power Requirement ◽  
Terahertz Frequencies

Noise Temperature and Absorbed LO Power Measurement Methods for NbN Phonon-Cooled Hot Electron Bolometric Mixers at Terahertz Frequencies

1998 ◽  
Author(s):  
Harald F. Merkel ◽  
Pavel A. Yagoubov ◽  
Matthias Kroug ◽  
Pourya Khosropanah ◽  
Erik L. Kollberg ◽  
...  
Keyword(s):  
Noise Temperature ◽  
Measurement Methods ◽  
Power Measurement ◽  
Hot Electron ◽  
Terahertz Frequencies

Noise temperature distribution of superconducting hot electron bolometer mixers

2020 ◽  
Vol 29 (5) ◽  
pp. 058505
Author(s):  
Kang-Min Zhou ◽  
Wei Miao ◽  
Yue Geng ◽  
Yan Delorme ◽  
Wen Zhang ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Noise Temperature ◽  
Hot Electron ◽  
Hot Electron Bolometer

Heterodyne measurements of a NbN superconducting hot electron mixer at terahertz frequencies

1999 ◽  
Vol 9 (2) ◽  
pp. 3757-3760 ◽  
Author(s):  
P. Yagoubov ◽  
M. Kroug ◽  
H. Merkel ◽  
E. Kollberg ◽  
J. Schubert ◽  
...  
Keyword(s):  
Hot Electron ◽  
Terahertz Frequencies

Semiconducting superlattice as a solid-state terahertz local oscillator for NbN hot-electron bolometer mixers

2012 ◽  
Vol 57 (7) ◽  
pp. 971-974
Author(s):  
I. V. Pentin ◽  
A. V. Smirnov ◽  
S. A. Ryabchun ◽  
R. V. Ozhegov ◽  
G. N. Gol’tsman ◽  
...  
Keyword(s):  
Solid State ◽  
Local Oscillator ◽  
Hot Electron ◽  
Hot Electron Bolometer

OSAS-B: a balloon-borne heterodyne spectrometer for sounding atomic oxygen in the MLT region

2021 ◽  
Author(s):  
Martin Wienold ◽  
Alexey Semenov ◽  
Heiko Richter ◽  
Heinz-Wilhelm Hübers
Keyword(s):  
Atomic Oxygen ◽  
Near Infrared ◽  
Lower Thermosphere ◽  
Local Oscillator ◽  
Hot Electron ◽  
Water Vapor Absorption ◽  
Mesosphere And Lower Thermosphere ◽  
Spectrally Resolved ◽  
Heterodyne Spectrometer ◽  
Mlt Region

<p>The Oxygen Spectrometer for Atmospheric Science on a Balloon (OSAS-B) is dedicated to the remote sounding of atomic oxygen in the mesosphere and lower thermosphere (MLT) region of Earth's atmosphere, where atomic oxygen is the dominant species. Quantitative radiometry of atomic oxygen via its visible and near-infrared transitions has been difficult, due to the complex excitation physics involved. OSAS-B is a heterodyne spectrometer for the thermally excited ground state transition of atomic oxygen at 4.75 THz. It will enable spectrally resolved measurements of the line shape,  which in turn enables the determination of the concentration of atomic oxygen in the MLT. Due to water absorption, this line can only be observed from high-altitude platforms such as a high-flying airplanes, balloons or satellites. Recently the first spectrally resolved observation of the 4.75-THz line has been reported using a heterodyne spectrometer on SOFIA, the Stratospheric Observatory for Infrared Astronomy [1]. Compared to SOFIA a balloon-borne instrument has the advantage of not being hampered by atmospheric water vapor absorption. OSAS-B will comprise a hot-electron bolometer mixer and a quantum-cascade laser as local oscillator in a combined helium/nitrogen dewar. A turning mirror will allow for sounding at different vertical inclinations. The  first flight of OSAS-B is planned for autumn 2022 in the frame of the European HEMERA project [2].</p><p>[1] H. Richter et al., Direct measurements of atomic oxygen in the mesosphere and lower thermosphere using terahertz heterodyne spectroscopy, accepted for publication in Communications Earth & Environment (2021).</p><p>[2] https://www.hemera-h2020.eu/</p>

scholarly journals Noise temperature and IF bandwidth of a 530-GHz heterodyne receiver employing a diffusion-cooled superconducting hot-electron mixer

1995 ◽  
Author(s):  
Anders J. Skalare ◽  
William R. McGrath ◽  
Bruce Bumble ◽  
Henry G. LeDuc ◽  
P. J. Burke ◽  
...  
Keyword(s):  
Noise Temperature ◽  
Hot Electron ◽  
Heterodyne Receiver
Sign in / Sign up

Export Citation Format

Share Document