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Yagoubov, P.; Hübers, H.-W.; Gol’tsman, G.; Semenov, A.; Gao, J.; Hoogeveen, R.; de Graauw, T.; Birk, M.; Selig, A.; de Korte, P. |
![find book details (via ISBN) isbn](https://db.rplab.ru/refbase/img/isbn.gif)
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Title |
Hot-electron bolometer mixers – technology for far-infrared heterodyne instruments in future atmospheric chemistry missions |
Type |
Conference Article |
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Year |
2001 |
Publication |
Proc. 3rd Int. Symp. Submillimeter Wave Earth Observation From Space |
Abbreviated Journal |
Proc. 3rd Int. Symp. Submillimeter Wave Earth Observation From Space |
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57-69 |
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Keywords |
HEB mixers |
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Delmenhorst |
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Logos-Verlag |
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Buehler, S.; Berlin |
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3-89722-700-2 |
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International Symposium on Submillimeter Wave Earth Observation from Space, ISSMWEOS01 |
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1549 |
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Antipov, S. V.; Svechnikov, S. I.; Smirnov, K. V.; Vakhtomin, Y. B.; Finkel, M. I.; Goltsman, G. N.; Gershenzon, E. M. |
![find record details (via OpenURL) openurl](https://db.rplab.ru/refbase/img/xref.gif)
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Title |
Noise temperature of quasioptical NbN hot electron bolometer mixers at 900 GHz |
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Journal Article |
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Year |
2001 |
Publication |
Physics of Vibrations |
Abbreviated Journal |
Physics of Vibrations |
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Volume |
9 |
Issue |
4 |
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242-245 |
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Keywords |
NbN HEB mixers |
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1069-1227 |
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1550 |
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Svechnikov, S. I.; Antipov, S. V.; Vakhtomin, Y. B.; Goltsman, G. N.; Gershenzon, E. M.; Cherednichenko, S. I.; Kroug, M.; Kollberg, E. |
![find record details (via OpenURL) openurl](https://db.rplab.ru/refbase/img/xref.gif)
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Title |
Conversion and noise bandwidths of terahertz NbN hot-electron bolometer mixers |
Type |
Journal Article |
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Year |
2001 |
Publication |
Physics of Vibrations |
Abbreviated Journal |
Physics of Vibrations |
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9 |
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3 |
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205-210 |
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NbN HEB mixers |
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1069-1227 |
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1551 |
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Cherednichenko, S.; Rönnung, F.; Gol'tsman, G.; Kollberg, E.; Winkler, D. |
![goto web page (via DOI) doi](https://db.rplab.ru/refbase/img/doi.gif)
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Title |
YBa2Cu3O7−δ hot-electron bolometer mixer |
Type |
Journal Article |
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Year |
2000 |
Publication |
Phys. C: Supercond. |
Abbreviated Journal |
Phys. C: Supercond. |
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Volume |
341-348 |
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Pages |
2653-2654 |
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Keywords |
YBCO HTS HEB mixers |
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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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0921-4534 |
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1552 |
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Hübers, Heinz-Wilhelm; Semenov, Alexei; Schubert, Josef; Gol'tsman, Gregory; Voronov, Boris; Gershenzon, Evgeni |
![find record details (via OpenURL) openurl](https://db.rplab.ru/refbase/img/xref.gif)
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Title |
Performance of the phonon-cooled hot-electron bolometric mixer between 0.7 THz and 5.2 THz |
Type |
Conference Article |
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Year |
2000 |
Publication |
Proc. 8-th Int. Conf. on Terahertz Electronics |
Abbreviated Journal |
Proc. 8-th Int. Conf. on Terahertz Electronics |
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Pages |
117-119 |
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Keywords |
NbN HEB mixers |
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Abstract |
We report on the phonon cooled NbN hot electron bolometer as mixer in the terahertz frequency range. Its hybrid antenna consists of a hyperhemispheric silicon lens and a logarithmic-spiral feed antenna. Noise temperatures have been measured between 0.7 THz and 5.2 THz. A quarter wavelength layer of Parylene works as antireflection coating for the silicon lens and reduces the noise temperature by about 30. It was found that the antenna pattern at 2.5 THz is determined by the feed antenna and not by the diameter of the lens. |
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Darmstadt, Germany |
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International Conference on Terahertz Electronics [8th], Held inDarmstadt, Germany on 28-29 September 2000 |
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1553 |
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Huebers, H.-W.; Semenov, A.; Schubert, J.; Gol’tsman, G. N.; Voronov, B. M.; Gershenzon, E. M.; Krabbe, A.; Roeser, H.-P. |
![goto web page (via DOI) doi](https://db.rplab.ru/refbase/img/doi.gif)
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Title |
NbN hot-electron bolometer as THz mixer for SOFIA |
Type |
Conference Article |
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Year |
2000 |
Publication |
Proc. SPIE |
Abbreviated Journal |
Proc. SPIE |
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Volume |
4014 |
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Pages |
195-202 |
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Keywords |
NbN HEB mixers, airborne, stratospheric observatory, SOFIA |
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Heterodyne receivers for applications in astronomy need quantum limited sensitivity. We have investigated phonon- cooled NbN hot electron bolometric mixers in the frequency range from 0.7 THz to 5.2 THz. The devices were 3.5 nm thin films with an in-plane dimension of 1.7 X 0.2 micrometers 2 integrated in a complementary logarithmic spiral antenna. The best measured DSB receiver noise temperatures are 1300 K (0.7 THz), 2000 K (1.4 THz), 2100 K (1.6 THz), 2600 K (2.5 THz), 4000 K (3.1 THz), 5600 K (4.3 THz), and 8800 K (5.2 THz). The sensitivity fluctuation, the long term stability, and the antenna pattern were measured. The results demonstrate that this mixer is very well suited for GREAT, the German heterodyne receiver for SOFIA. |
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SPIE |
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Melugin, R.K.; Roeser, H.-P. |
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Airborne Telescope Systems |
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1554 |
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Cherednichenko, S.; Rönnung, F.; Gol’tsman, G.; Kollberg, E.; Winkler, D. |
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Title |
YBa2Cu3O7-δ hot-electron bolometer mixer at 0.6 THz |
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Conference Article |
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Year |
2000 |
Publication |
Proc. 11th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 11th Int. Symp. Space Terahertz Technol. |
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Volume |
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Pages |
517-522 |
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Keywords |
YBCO HTS HEB mixers |
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We present an investigation of hot-electron bolometric mixer based on a YBa 2 Cu 3 O 7-δ (YBCO) superconducting thin film. Mixer conversion loss of –46 dB, absorbed local oscillator power and intermediate frequency bandwidth were measured at the local oscillator frequency 0.6 THz. The fabrication technique for nanoscale YBCO hot-electron bolometer (HEB) mixer integrated with a planar antenna structure is described. |
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1556 |
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Cherednichenko, S.; Kroug, M.; Yagoubov, P.; Merkel, H.; Kollberg, E.; Yngvesson, K. S.; Voronov, B.; Gol’tsman, G. |
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Title |
IF bandwidth of phonon cooled HEB mixers made from NbN films on MgO substrates |
Type |
Conference Article |
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Year |
2000 |
Publication |
Proc. 11th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 11th Int. Symp. Space Terahertz Technol. |
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219-227 |
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NbN HEB mixers, cinversion gain bandwidth, IF bandwidth |
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An investigation of gain and noise bandwidth of phonon-cooled hot-electron bolometric (HEB) mixers is presented. The radiation coupling to the mixers is quasioptical through either a spiral or twin-slot antenna. A maximum gain bandwidth of 4.8 GHz is obtained for mixers based on a 3.5 nm thin NbN film with Tc= 10 K. The noise bandwidth is 5.6 GHz, at the moment limited by parasitic elements in the, device mount fixture. At 0.65 THz the DSB receiver noise temperature is 700-800 К in the IF band 1-2 GHz, and 1150-2700 К in the band 3.5-7 GHz. |
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1557 |
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Author |
Semenov, A. D.; Gol’tsman, G. N. |
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Title |
Nonthermal mixing mechanism in a diffusion-cooled hot-electron detector |
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Journal Article |
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2000 |
Publication |
J. Appl. Phys. |
Abbreviated Journal |
J. Appl. Phys. |
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87 |
Issue |
1 |
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502-510 |
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NbN HEB mixers, nonthermal |
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We present an analysis of a diffusion-cooled hot-electron detector fabricated from clean superconducting material with low transition temperature. The distinctive feature of a clean material, i.e., material with large electron mean free path, is a relatively weak inelastic electron scattering that is not sufficient for the establishment of an elevated thermodynamic electron temperature when the detector is subjected to irradiation. We propose an athermal model of a diffusion-cooled detector that relies on suppression of the superconducting energy gap by the actual dynamic distribution of excess quasiparticles. The resistive state of the device is caused by the electric field penetrating into the superconducting bridge from metal contacts. The dependence of the penetration length on the energy gap delivers the detection mechanism. The sources of the electric noise are equilibrium fluctuations of the number of thermal quasiparticles and frequency dependent shot noise. Using material parameters typical for A1, we evaluate performance of the device in the heterodyne regime at terahertz frequencies. Estimates show that the mixer may have a noise temperature of a few quantum limits and a bandwidth of a few tens of GHz, while the required local oscillator power is in the μW range due to ineffective suppression of the energy gap by quasiparticles with high energies. |
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0021-8979 |
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1558 |
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Gerecht, E.; Musante, C. F.; Zhuang, Y.; Yngvesson, K. S.; Gol’tsman, G. N.; Voronov, B. M.; Gershenzon, E. M. |
![goto web page (via DOI) doi](https://db.rplab.ru/refbase/img/doi.gif)
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Title |
NbN hot electron bolometric mixerss—a new technology for low-noise THz receivers |
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Journal Article |
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1999 |
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IEEE Trans. Appl. Supercond. |
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IEEE Trans. Appl. Supercond. |
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47 |
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12 |
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2519-2527 |
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NbN HEB mixers |
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New advances in hot electron bolometer (HEB) mixers have recently resulted in record-low receiver noise temperatures at terahertz frequencies. We have developed quasi-optically coupled NbN HEB mixers and measured noise temperatures up to 2.24 THz, as described in this paper. We project the anticipated future performance of such receivers to have even lower noise temperature and local-oscillator power requirement as well as wider gain and noise bandwidths. We introduce a proposal for integrated focal plane arrays of HEB mixers that will further increase the detection speed of terahertz systems. |
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1557-9670 |
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