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Gol'tsman, G.; Jacobsson, S.; Ekstrom, H.; Karasik, B.; Kollberg, E.; Gershenzon, E. |
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Slot-line tapered antenna with NbN hot electron mixer for 300-360 GHz operation |
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1994 |
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Proc. 5th Int. Symp. Space Terahertz Technol. |
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Proc. 5th Int. Symp. Space Terahertz Technol. |
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209-213a |
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NbN HEB mixers |
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NbN hot-electron mixers combined with slot-line tapered antennas on Si wdnitride membranes had been fabricated. Several strips of 1 gm wide and 5 tan long made from 100 A NbN film are inserted into the slot antenna. IV-curves under local oscillator power in 300-350 GHz frequency range and conversion gain dependencies on intermediate fre- quency in the 0.1-1 GHz range are measured and compared with that for 100 GHz frequency band. Our results show that pumped IV-curves and intermediate frequency bands are different for 100 GHz and 300 GHz frequency ranges. The interpretation exploits the fact that for the lowest radiation frequency the superconducting energy gap is larger than the radiation quantum energy while they are comparable at the higher frequency. Tha results show that such mixers have good perspectives for terahertz receiving technology. |
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1643 |
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0kunev, 0.; Dzardanov, A.; Ekstrom, H.; Jacobsson, S.; Kollberg, E.; Gol'tsman, G.; Gershenzon, E. |
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Title |
NbN hot electron waveguide mixer for 100 GHz operation |
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Conference Article |
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Year |
1994 |
Publication |
Proc. 5th Int. Symp. Space Terahertz Technol. |
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Proc. 5th Int. Symp. Space Terahertz Technol. |
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214-224 |
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waveguide NbN HEB mixers |
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NbN is a promising superconducting material used to develope hot- electron superconducting mixers with an IF bandwidth over 1 GHz. In the 100 GHz frequency range, the following parameters were obtained for NbN films 50 A thick: the noise temperature of the receiver (DSB) 1000 K; the conversion losses 10 d13, the IF bandwidth 1 GHz; the local oscillator power 1 /LW. An increase of NbN film thickness up to 80-100 A and increase of working temperature up to 7-8 K, and a better mixer matching may allow to broader the IF band up to 3 Gllz, to reduce the conversion losses down to 3-5 dB and the noise tempera- ture down to 200-300 K. |
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1644 |
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Elantev, Andrey I.; Karasik, Boris S. |
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Title |
Noise temperature of a superconducting hot-electron mixer |
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1994 |
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Proc. 5th Int. Symp. Space Terahertz Technol. |
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Proc. 5th Int. Symp. Space Terahertz Technol. |
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225 |
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HEB mixers |
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1645 |
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Zolotov, P. I.; Vakhtomin, Yu. B.; Divochiy, A. V.; Seleznev, V. A.; Smirnov, K. V. |
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Technology development of resonator-based structures for efficiency increasing of NBN detectors of IR single photons |
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2016 |
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Proc. 5th Int. Conf. Photonics and Information Optics |
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Proc. 5th Int. Conf. Photonics and Information Optics |
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115-116 |
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NbN SSPD |
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This paper presents a technology of fabrication of NbN superconductive single- photon detectors, using resonator structures. The main results are related to optimization of the process of NbN sputtering over substrate with metallic mirrors and SiO 2 /Si 3 N 4 layers /4 thick. Investigation of the quantum efficiency of fabricated devices at 1.6 K on 1.55 μm showed triple-magnified value compared to standard Si/NbN structures. |
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978-5-7262-2215-8 |
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http://fioconf.mephi.ru/files/2015/12/FIO2016-Sbornik.pdf Разработка технологии создания резонаторных структур для увеличения квантовой эффективности NBN детекторов ИК-фотонов |
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1811 |
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Maslennikov, S. N.; Morozov, D. V.; Ozhegov, R. V.; Smirnov, K. V.; Okunev, O. V.; Gol’tsman, G. N. |
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Imaging system for submillimeter wave range based on AlGaAs/GaAs hot electron bolometer mixers |
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2004 |
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Proc. 5-th MSMW |
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Proc. 5-th MSMW |
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2 |
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558-560 |
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AlGaAs/GaAs HEB mixers |
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Electromagnetic radiation of the submillimeter (SMM) range is dispersed and absorbed significantly less than infrared (IR) radiation when passing through different objects. That is the reason for the development of an SMM imaging system. In this paper, we discuss the design of an SMM heterodyne imager, based on a matrix of AlGaAs/GaAs heterostructure hot electron bolometer mixers (HEB) with relatively high (about 77 K) operating temperature. The predicted double side band (DSB) noise temperature is about 1000 K and optimal local oscillator (LO) power is about 1 /spl mu/W for such mixers, which seems to be quite prospective for an SMM heterodyne imager. |
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Kharkov, Ukraine |
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The Fifth International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter, and Submillimeter Waves (IEEE Cat. No.04EX828) |
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1487 |
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