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Tretyakov, I. V.; Ryabchun, S. A.; Maslennikov, S. N.; Finkel, M. I.; Kaurova, N. S.; Seleznev, V. A.; Voronov, B. M.; Gol'tsman, G.N. |
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NbN HEB mixer: fabrication, noise temperature reduction and characterization |
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2008 |
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Proc. Basic problems of superconductivity |
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HEB, mixer, noise temperature, conversion gain bandwidth |
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We demonstrate that in the terahertz region superconducting hot-electron mixers offer the lowest noise temperature, opening the possibility of using HTS's in the future to fabricate these devices. Specifically, a noise temperature of 950 K was measured for the receiver operating at 2.5 THz with a NbN HEB mixer, and a gain bandwidth of 6 GHz was measured at 300 GHz near Tc for the same mixer. |
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Moscow-Zvenigorod |
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591 |
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Smirnov, A. V.; Larionov, P. A.; Finkel, M. I.; Maslennikov, S. N.; Voronov, B. M.; Gol'tsman, G. N. |
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Title |
NbZr films for THz phonon-cooled HEB mixers |
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2008 |
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Proc. 19th Int. Symp. Space Terahertz Technol. |
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Proc. 19th Int. Symp. Space Terahertz Technol. |
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44-47 |
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HEB, NbZr, material search |
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Groningen, Netherlands |
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Kaganov, M. L.; Lifshitz, I. M.; Tanatarov, L. V. |
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Relaxation between electrons and the crystalline lattice |
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1957 |
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Sov. Phys. JETP |
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Sov. Phys. JETP |
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4 |
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2 |
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173-178 |
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HEB, nonlinear equations, numerical model |
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894 |
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Gao, J. R.; Hovenier, J. N.; Yang, Z. Q.; Baselmans, J. J. A.; Baryshev, A.; Hajenius, M.; Klapwijk, T. M.; Adam, A. J. L.; Klaassen, T. O.; Williams, B. S.; Kumar, S.; Hu, Q.; Reno, J. L. |
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Terahertz heterodyne receiver based on a quantum cascade laser and a superconducting bolometer |
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2005 |
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Appl. Phys. Lett. |
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Appl. Phys. Lett. |
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86 |
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244104 (1 to 3) |
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HEB, QCL |
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We report the first demonstration of an all solid-stateheterodyne receiver that can be used for high-resolution spectroscopy above 2THz suitable for space-based observatories. The receiver uses a NbN superconducting hot-electron bolometer as mixer and a quantum cascade laser operating at 2.8THz as local oscillator. We measure a double sideband receiver noise temperature of 1400K at 2.8THz and 4.2K, and find that the free-running QCL has sufficient power stability for a practical receiver, demonstrating an unprecedented combination of sensitivity and stability. |
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905 |
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Rasulova, G. K.; Pentin, I. V.; Vakhtomin, Y. B.; Smirnov, K. V.; Khabibullin, R. A.; Klimov, E. A.; Klochkov, A. N.; Goltsman, G. N. |
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Pulsed terahertz radiation from a double-barrier resonant tunneling diode biased into self-oscillation regime |
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2020 |
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J. Appl. Phys. |
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J. Appl. Phys. |
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128 |
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22 |
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224303 (1 to 11) |
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HEB, resonant tunneling diode, RTD |
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The study of the bolometer response to terahertz (THz) radiation from a double-barrier resonant tunneling diode (RTD) biased into the negative differential conductivity region of the I–V characteristic revealed that the RTD emits two pulses in a period of intrinsic self-oscillations of current. The bolometer pulse repetition rate is a multiple of the fundamental frequency of the intrinsic self-oscillations of current. The bolometer pulses are detected at two critical points with a distance between them being half or one-third of a period of the current self-oscillations. An analysis of the current self-oscillations and the bolometer response has shown that the THz photon emission is excited when the tunneling electrons are trapped in (the first pulse) and then released from (the second pulse) miniband states. |
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0021-8979 |
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