Records |
Author |
Ожегов, Р. В.; Масленников, С. Н.; Морозов, Д. В.; Окунев, О. В.; Смирнов, К. В.; Гольцман, Г. Н. |
Title |
Тепловизор субмиллиметрового диапазона длин волн |
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Conference Article |
Year |
2004 |
Publication |
Десятая всероссийская научная конференция студентов-физиков и молодых ученых (ВНКСФ-10) |
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Москва |
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russian |
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Duplicated as 347 |
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RPLAB @ s @ thzimaging_vnksf10_2004_rus |
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348 |
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Maslennikov, S.; Vachtomin, Yu.; Antipov, S.; Smirnov, K.; Kaurova, N.; Grishina, E.; Voronov, B.; Gol'tsman, G. |
Title |
NbN HEB mixers for frequencies of 2.5 and 3.8 THz |
Type |
Conference Article |
Year |
2004 |
Publication |
Proc. Tenth All-Russian sceintific conference of student-physicists and young sceintists (VNKSF-10) |
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Moscow |
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RPLAB @ s @ qoheb_vnksf10_2004 |
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349 |
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Antipov, S. V.; Vachtomin, Yu. B.; Maslennikov, S. N.; Smirnov, K. V.; Kaurova, N. S.; Grishina, E. V.; Voronov, B. M.; Goltsman, G. N. |
Title |
Noise performance of quasioptical ultrathin NbN hot electron bolometer mixer at 2.5 and 3.8 THz |
Type |
Conference Article |
Year |
2004 |
Publication |
Proc. 5-th MSMW |
Abbreviated Journal |
Proc. 5-th MSMW |
Volume |
2 |
Issue |
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Pages |
592-594 |
Keywords |
NbN HEB mixers |
Abstract |
To put space-based and airborne heterodyne instruments into operation at frequencies above 1 THz the superconducting NbN hot-electron bolometer (HEB) will be incorporated into heterodyne receiver as a mixer. At frequencies above 1.3 THz the sensitivity of the NbN HEB mixers outperform the one of the Schottky diodes and SIS-mixers, and the receiver noise temperature of the NbN HEB mixers increase with frequency. In this paper we present the results of the noise temperature measurements within one batch of NbN HEB mixers based on 3.5 mn thick superconducting NbN film grown on Si substrate with MgO buffer layer at the LO frequencies 2.5 THz and 3.8 THz. |
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Kharkov, Ukraine |
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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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351 |
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Масленников, С. Н.; Вахтомин, Ю. Б.; Антипов, С. В.; Смирнов, К. В.; Каурова, Н. С.; Гришина, Е. В.; Воронов, Б. М.; Гольцман, Г. Н. |
Title |
Смесители на основе электронного разогрева в тонких пленках NbN для частот 2.5 и 3.8 ТГц |
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Conference Article |
Year |
2004 |
Publication |
Десятая всероссийская научная конференция студентов-физиков и молодых ученых (ВНКСФ-10) |
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Москва |
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russian |
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Duplicated as 349 |
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RPLAB @ s @ qoheb_vnksf10_2004_rus |
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350 |
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Vachtomin, Yu. B.; Antipov, S. V.; Kaurova, N. S.; Maslennikov, S. N.; Smirnov, K. V.; Polyakov, S. L.; Svechnikov, S. I.; Grishina, E. V.; Voronov, B. M.; Gol'tsman, G. N. |
Title |
Noise temperature, gain bandwidth and local oscillator power of NbN phonon-cooled HEB mixer at terahertz frequenciess |
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Conference Article |
Year |
2004 |
Publication |
Proc. 29th IRMMW / 12th THz |
Abbreviated Journal |
Proc. 29th IRMMW / 12th THz |
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329-330 |
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We present the performances of HEB mixers based on 3.5 nm thick NbN film integrated with log-periodic spiral antenna. The double side-band receiver noise temperature values are 1300 K and 3100 K at 2.5 THz and at 3.8 THz, respectively. The gain bandwidth of the mixer is 4.2 GHz and the noise bandwidth is 5 GHz. The local oscillator power is 1-3 /spl mu/W for mixers with different active area. |
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Karlsruhe, Germany |
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Karlsruhe, Germany |
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RPLAB @ s @ nt_ifb_lopow_qoheb_karlsruhe_2004 |
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354 |
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Author |
Alexandre Karpov; David Miller; Rice, Frank R.; Stern, Jeffrey A.; Bruce Bumble; LeDuc, Henry G.; Jonas Zmuidzinas |
Title |
Low-noise SIS mixer for far-infrared radio astronomy |
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Conference Article |
Year |
2004 |
Publication |
Proc. SPIE |
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5498 |
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616-621 |
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Glasgow, Scotland, UK |
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RPLAB @ s @ nt_SIS_550at1p2THz |
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353 |
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Author |
Kaurova, N. S.; Finkel, M. I.; Maslennikov, S. N.; Vahtomin, Yu. B.; Antipov, S. V.; Smirnov, K. V.; Voronov, B. M.; Gol'tsman, G. N.; Ilyin, K. S. |
Title |
Submillimeter mixer based on YBa2Cu3O7-x thin film |
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Conference Article |
Year |
2004 |
Publication |
Proc. 1-st conf. Fundamental problems of high temperature superconductivity |
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291 |
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HTS, HEB mixer |
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Moscow-Zvenigorod |
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Moscow-Zvenigorod |
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355 |
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Каурова, Н. С.; Финкель, М. И.; Масленников, С. Н.; Вахтомин, Ю. Б.; Антипов, С. В.; Смирнов, К. В.; Воронов, Б. М.; Гольцман, Г. Н.; Ильин, К. С. |
Title |
Смеситель субмиллиметрового диапазона длин волн на основе тонкой пленки YBa2Cu3O7-x |
Type |
Conference Article |
Year |
2004 |
Publication |
1-я международная конференция Фундаментальные проблемы высокотемпературной сверхпроводимости |
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291 |
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Москва-Звенигород |
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Москва-Звенигород |
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russian |
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RPLAB @ s @ htsmix_zvenigorod_2004_rus |
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356 |
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Author |
van't Klooster, K.; Myasnikova, S. E.; Parshin, V. V.; Kasparek, W. |
Title |
Results of reflection loss measurements of sample material for radio astronomy telescope antenna for Planck Project |
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Conference Article |
Year |
2004 |
Publication |
Proc. 14th international crimean conference on microwave and telecommunication technology |
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753-755 |
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mirror, reflection index, emissivity, Fabry-Perot interferometer, space observatory, terahertz, THz |
Abstract |
Advanced radio telescope antennas for space applications are realised by the use of stable composite materials, which are lighter in general than various metal realisations. Reflectivity measurements have been carried out on high technology samples for the Planck radio telescope. Highly accurate results have been obtained at the Applied Physics Institute in Nizhny Novgorod, and an independent measurement with a totally different setup at the University of Stuttgart confirmed that one of the samples showed a strange behaviour. Moreover, it confirmed the high accuracy of the testing method. |
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579 |
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Author |
Genack, Azriel Z.; Kopp, Victor I.; Churikov, Victor M.; Singer, Jonathan; Chao, Norman; Neugroschl, Daniel A. |
Title |
Chiral fiber Bragg gratings |
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Conference Article |
Year |
2004 |
Publication |
Proceedings of the SPIE |
Abbreviated Journal |
Proc. SPIE |
Volume |
5508 |
Issue |
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Pages |
57-64 |
Keywords |
optical fiber gratings, chiral fiber gratings, chiral gratings, from chiralphotonics |
Abstract |
We have produced chiral fiber Bragg gratings with double-helix symmetry and measured the polarization and wavelength selective transmission properties of these structures. These gratings interact only with circularly polarized light with the same handedness as the grating twist and freely transmit light of the orthogonal polarization. The optical characteristics of chiral fibers are compared to those of planar cholesteric structures. The resonant standing wave at the band edge or at a defect state within the band gap, as well as the evanescent wave within the band gap is comprised of two counterpropagating components of equal amplitude. The electric field vector of such a circularly polarized standing wave does not rotate in time; rather it is linearly polarized in any given plane. The standing wave may be described in terms of the sense of circular polarization of the two counterpropagating components. The wavelength dependence of the angle q between the linearly polarized electromagnetic field and the extraordinary axis, which is constant throughout a long structure, is obtained in a simple calculation. The results are in good agreement with scattering matrix calculations. Resonant chiral gratings are demonstrated for microwave radiation whereas chiral gratings with pitch exceeding the wavelength are demonstrated at optical wavelengths in single-mode glass fibers. The different functionalities of these fibers are discussed. |
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854 |
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