Records |
Author |
Cherednichenko, S.; Kroug, M.; Merkel, H.; Khosropanah, P.; Adam, A.; Kollberg, E.; Loudkov, D.; Gol'tsman, G.; Voronov, B.; Richter, H.; Huebers, H.-W. |
Title |
1.6 THz heterodyne receiver for the far infrared space telescope |
Type |
Journal Article |
Year |
2002 |
Publication |
Phys. C: Supercond. |
Abbreviated Journal |
Phys. C: Supercond. |
Volume |
372-376 |
Issue |
|
Pages |
427-431 |
Keywords |
NbN HEB mixers, applications |
Abstract |
A low noise heterodyne receiver is being developed for the terahertz range using a phonon-cooled hot-electron bolometric mixer based on 3.5 nm thick superconducting NbN film. In the 1–2 GHz intermediate frequency band the double-sideband receiver noise temperature was 450 K at 0.6 THz, 700 K at 1.6 THz and 1100 K at 2.5 THz. In the 3–8 GHz IF band the lowest receiver noise temperature was 700 K at 0.6 THz, 1500 K at 1.6 THz and 3000 K at 2.5 THz while it increased by a factor of 3 towards 8 GHz. |
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ISSN ![sorted by ISSN field, ascending order (up)](img/sort_asc.gif) |
0921-4534 |
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Serial |
1527 |
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Author |
Cherednichenko, S.; Rönnung, F.; Gol'tsman, G.; Kollberg, E.; Winkler, D. |
Title |
YBa2Cu3O7−δ hot-electron bolometer mixer |
Type |
Journal Article |
Year |
2000 |
Publication |
Phys. C: Supercond. |
Abbreviated Journal |
Phys. C: Supercond. |
Volume |
341-348 |
Issue |
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Pages |
2653-2654 |
Keywords |
YBCO HTS HEB mixers |
Abstract |
We present an investigation of hot-electron bolometric mixer based on YBa2Cu3O7−δ (YBCO) superconducting thin film. Mixer conversion loss, absorbed local oscillator power and intermediate frequency bandwidth was measured at the local oscillator frequency 600 GHz. The fabrication technique for nanoscale YBCO hot-electron bolometer (HEB) mixer integrated into planar antenna structure is described. |
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ISSN ![sorted by ISSN field, ascending order (up)](img/sort_asc.gif) |
0921-4534 |
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no |
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Serial |
1552 |
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Author |
Kroug, M.; Yagoubov, P.; Gol'tsman, G.; Kollberg, E. |
Title |
NbN quasioptical phonon cooled hot electron bolometric mixers at THz frequencies |
Type |
Conference Article |
Year |
1997 |
Publication |
Inst. Phys. Conf. Ser. |
Abbreviated Journal |
Inst. Phys. Conf. Ser. |
Volume |
1 |
Issue |
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Pages |
405-408 |
Keywords |
NbN HEB mixers |
Abstract |
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Address |
Veldhoven |
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Place of Publication |
Bristol |
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ISSN ![sorted by ISSN field, ascending order (up)](img/sort_asc.gif) |
0951-3248 |
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Conference |
3rd Eur. Conf. on Applied Superconductivity |
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Serial |
1600 |
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Author |
Hajenius, M.; Baselmans, J. J. A.; Gao, J. R.; Klapwijk, T. M.; de Korte, P. A. J.; Voronov, B.; Gol'tsman, G. |
Title |
Low noise NbN superconducting hot electron bolometer mixers at 1.9 and 2.5 THz |
Type |
Journal Article |
Year |
2004 |
Publication |
Supercond. Sci. Technol. |
Abbreviated Journal |
Supercond. Sci. Technol. |
Volume |
17 |
Issue |
5 |
Pages |
S224-S228 |
Keywords |
NbN HEB mixers |
Abstract |
NbN phonon-cooled hot electron bolometer mixers (HEBs) have been realized with negligible contact resistance between the bolometer itself and the contact structure. Using a combination of in situ cleaning of the NbN film and the use of an additional superconducting interlayer of a 10 nm NbTiN layer between the Au of the contact structure and the NbN film superior noise temperatures have been obtained as low as 950 K at 2.5 THz and 750 K at 1.9 THz. Here we address in detail the DC characterization of these devices, the interface transparencies between the bolometers and the contacts and the consequences of these factors on the mixer performance. |
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ISSN ![sorted by ISSN field, ascending order (up)](img/sort_asc.gif) |
0953-2048 |
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no |
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Serial |
558 |
Permanent link to this record |
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Author |
Yagoubov, Pavel; Kroug, Matthias; Merkel, Harald; Kollberg, Erik; Schubert, Josef; Hübers, Heinz-Wilhelm |
Title |
NbN hot electron bolometric mixers at frequencies between 0.7 and 3.1 THz |
Type |
Journal Article |
Year |
1999 |
Publication |
Supercond. Sci. Technol. |
Abbreviated Journal |
Supercond. Sci. Technol. |
Volume |
12 |
Issue |
11 |
Pages |
989-991 |
Keywords |
NbN HEB mixers |
Abstract |
The performance of NbN-based phonon-cooled hot electron bolometric (HEB) quasioptical mixers is investigated in the 0.7-3.1 THz frequency range. The devices are made from a 3.5-4 nm thick NbN film on high resistivity Si and integrated with a planar spiral antenna on the same substrate. The length of the bolometer microbridge is 0.1-0.2 µm; the width is 1-2 µm. The best results of the DSB receiver noise temperature measured at 1.5 GHz intermediate frequency are: 800 K at 0.7 THz, 1100 K at 1.6 THz, 2000 K at 2.5 THz and 4200 K at 3.1 THz. The measurements were performed with a far infrared laser as the local oscillator (LO) source. The estimated LO power requirement is less than 500 nW at the receiver input. First results on spiral antenna polarization measurements are reported. |
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ISSN ![sorted by ISSN field, ascending order (up)](img/sort_asc.gif) |
0953-2048 |
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no |
Call Number |
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Serial |
295 |
Permanent link to this record |