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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 |
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Journal Article |
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2000 |
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Phys. C: Supercond. |
Abbreviated Journal |
Phys. C: Supercond. |
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341-348 |
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2653-2654 |
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YBCO HTS HEB mixers |
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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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Semenov, A.; Richter, H.; Hübers, H.-W.; Smirnov, K.; Voronov, B.; Gol'tsman, G. |
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Title |
Development of terahertz superconducting hot-electron bolometer mixers |
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Conference Article |
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2003 |
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Proc. 6th European Conf. Appl. Supercond. |
Abbreviated Journal |
Proc. 6th European Conf. Appl. Supercond. |
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Volume |
181 |
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2960-2965 |
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Keywords |
NbN HEB mixers |
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We present recent results of the development of phonon cooled hot-electron bolometric (HEB) mixers for airborne and balloon borne terahertz heterodyne receivers. Three iomportant issues have been addresses: the quality of NbN films the HEB mixers were made from, the spectral properties of the HEB mixers and the local oscillator power required for optical operation. Studies with an atomic force microscope indicate, that the performance of the HEB mixer might have been effected by the microstructure of the NbN film. Antenna gain and noise temperature were investigated at terahertz frequencies for a HEB embedded in either log-spiral or twin-slot feed antenna. Comparison suggests that at frequencies above 3 THz the spiral feed provides better overall performance. At 1.6 THz, a power of 2.5 µW was required from the local oscillator for optimal operation of the HEB mixer. |
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Sorrento, Italy |
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0750309814, 978-0750309813 |
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1505 |
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Schubert, J.; Semenov, A.; Hübers, H.-W.; Gol'tsman, G.; Schwaab, G.; Voronov, B.; Gershenzon, E. |
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Title |
Broad-band terahertz NbN hot-electron bolometric mixer |
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Conference Article |
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Year |
1999 |
Publication |
Inst. Phys. Conf. |
Abbreviated Journal |
Inst. Phys. Conf. |
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Volume |
167 |
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663-666 |
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Keywords |
NbN HEB mixers |
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4th Europ. Conf. on Appl. Superconductivity, Barcelona, Spain, 14-17 September 1999 |
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1578 |
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Anfertev, V.; Vaks, V.; Revin, L.; Pentin, I.; Tretyakov, I.; Goltsman, G.; Vinogradov, E. A.; Naumov, A. V.; Gladush, M. G.; Karimullin, K. R. |
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High resolution THz gas spectrometer based on semiconductor and superconductor devices |
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Conference Article |
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2017 |
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EPJ Web Conf. |
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EPJ Web Conf. |
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132 |
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02001 (1 to 2) |
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Keywords |
NbN HEB mixers, detectors, THz spectroscopy |
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The high resolution THz gas spectrometer consists of a synthesizer based on Gunn generator with a semiconductor superlattice frequency multiplier as a radiation source, and an NbN hot electron bolometer in a direct detection mode as a THz radiation receiver was presented. The possibility of application of a quantum cascade laser as a local oscillator for a heterodyne receiver which is based on an NbN hot electron bolometer mixer is shown. The ways for further developing of the THz spectroscopy were outlined. |
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2100-014X |
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1328 |
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Shcherbatenko, M.; Tretyakov, I.; Lobanov, Yu.; Maslennikov, S. N.; Kaurova, N.; Finkel, M.; Voronov, B.; Goltsman, G.; Klapwijk, T. M. |
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Title |
Nonequilibrium interpretation of DC properties of NbN superconducting hot electron bolometers |
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2016 |
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Appl. Phys. Lett. |
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109 |
Issue |
13 |
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132602 |
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Keywords |
HEB mixer, contacts |
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We present a physically consistent interpretation of the dc electrical properties of niobiumnitride (NbN)-based superconducting hot-electron bolometer mixers, using concepts of nonequilibrium superconductivity. Through this, we clarify what physical information can be extracted from the resistive transition and the dc current-voltage characteristics, measured at suitably chosen temperatures, and relevant for device characterization and optimization. We point out that the intrinsic spatial variation of the electronic properties of disordered superconductors, such as NbN, leads to a variation from device to device. |
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1107 |
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