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| Title |
Atacama large millimeter/submillimeter array |
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2007 |
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no |
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RPLAB @ s @ ALMA_proj |
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403 |
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| Author |
Jian Wei; David Olaya; Boris Karasik; Sergey Pereverzev; Andrei Sergeev; Michael Gershenson |
| Title |
Ultra-sensitive hot-electron nanobolometers for terahertz astrophysics |
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Journal Article |
| Year |
2007 |
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ArXiv e-prints |
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710 |
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| Keywords |
cond-mat.other; astro-ph; cond-mat.mes-hall |
| Abstract |
The background-limited spectral imaging of the early Universe requires spaceborne terahertz (THz) detectors with the sensitivity 2-3 orders of magnitude better than that of the state-of-the-art bolometers. To realize this sensitivity without sacrificing operating speed, novel detector designs should combine an ultrasmall heat capacity of a sensor with its unique thermal isolation. Quantum effects in thermal transport at nanoscale put strong limitations on the further improvement of traditional membrane-supported bolometers. Here we demonstrate an innovative approach by developing superconducting hot-electron nanobolometers in which the electrons are cooled only due to a weak electron-phonon interaction. At T<0.1K, the electron-phonon thermal conductance in these nanodevices becomes less than one percent of the quantum of thermal conductance. The hot-electron nanobolometers, sufficiently sensitive for registering single THz photons, are very promising for submillimeter astronomy and other applications based on quantum calorimetry and photon counting. |
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arXiv:0710.5474v1; 19 pages, 3 color figures |
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RPLAB @ s @ |
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407 |
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Kooi, J. W.; Baselmans, J. J. A.; Hajenius, M.; Gao, J. R.; Klapwijk, T. M.; Dieleman, P.; Baryshev, A.; de Lange, G. |
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IF impedance and mixer gain of NbN hot electron bolometers |
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Journal Article |
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2007 |
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J. Appl. Phys. |
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101 |
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4 |
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044511 |
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0021-8979 |
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no |
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RPLAB @ s @ |
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445 |
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| Author |
Морозов, Дмитрий Владимирович |
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Приемные устройства терагерцового диапазона на эффекте разогрева двумерного электронного газа в гетероструктурах AlGaAs/GaAs |
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2007 |
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М. МПГУ |
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Ph.D. thesis |
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no |
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RPLAB @ s @ |
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626 |
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| Author |
Cherednichenko, Sergey; Drakinskiy, Vladimir; Berg, Therese; Kollberg, Erik L.; Angelov, Iltcho |
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The direct detection effect in the hot-electron bolometer mixer sensitivity calibration |
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Journal Article |
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2007 |
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IEEE Trans. Microw. Theory Techn. |
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55 |
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3 |
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504-510 |
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HEB, mixer, direct detection effect |
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0018-9480 |
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RPLAB @ lobanovyury @ |
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555 |
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