Records |
Author |
Finkel, M. I.; Maslennikov, S. N.; Vachtomin, Yu. B.; Svechnikov, S. I.; Smirnov, K. V.; Seleznev, V. A.; Korotetskaya, Yu. P.; Kaurova, N. S.; Voronov, B. M.; Gol'tsman, G. N. |
Title |
Hot electron bolometer mixer for 20 – 40 THz frequency range |
Type |
Conference Article |
Year |
2005 |
Publication |
Proc. 16th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 16th Int. Symp. Space Terahertz Technol. |
Volume |
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Issue |
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Pages |
393-397 |
Keywords |
IR NbN HEB mixers |
Abstract |
The developed HEB mixer was based on a 5 nm thick NbN film deposited on a GaAs substrate. The active area of the film was patterned as a 30×20 μm 2 strip and coupled with a 50 Ohm coplanar line deposited in situ. An extended hemispherical germanium lens was used to focus the LO radiation on the mixer. The responsivity of the mixer was measured in a direct detection mode in the 25÷64 THz frequency range. The noise performance of the mixer and the directivity of the receiver were investigated in a heterodyne mode. A 10.6 μm wavelength CW CO 2 laser was utilized as a local oscillator. |
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Göteborg, Sweden |
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369 |
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Loudkov, D.; Tong, C. Y. E.; Blundell, R.; Kaurova, N.; Grishina, E.; Voronov, B.; Gol'tsman, G. |
Title |
An investigation of the performance of the superconducting HEB슠mixer as a function of its RF슠embedding impedance |
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Journal Article |
Year |
2005 |
Publication |
IEEE Trans. Appl. Supercond. |
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Volume |
15 |
Issue |
2 |
Pages |
472-475 |
Keywords |
HEB mixer |
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IEEE |
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371 |
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Gol'tsman, Gregory N.; Vachtomin, Yuriy B.; Antipov, Sergey V.; Finkel, Matvey I.; Maslennikov, Sergey N.; Smirnov, Konstantin V.; Polyakov, Stanislav L.; Svechnikov, Sergey I.; Kaurova, Natalia S.; Grishina, Elisaveta V.; Voronov, Boris M. |
Title |
NbN phonon-cooled hot-electron bolometer mixer for terahertz heterodyne receivers |
Type |
Conference Article |
Year |
2005 |
Publication |
Proc. SPIE |
Abbreviated Journal |
Proc. SPIE |
Volume |
5727 |
Issue |
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Pages |
95-106 |
Keywords |
NbN HEB mixers |
Abstract |
We present the results of our studies of NbN phonon-cooled HEB mixers at terahertz frequencies. The mixers were fabricated from NbN film deposited on a high-resistivity Si substrate with an MgO buffer layer. The mixer element was integrated with a log-periodic spiral antenna. The noise temperature measurements were performed at 2.5 THz and at 3.8 THz local oscillator frequencies for the 3 x 0.2 μm2 active area devices. The best uncorrected receiver noise temperatures found for these frequencies are 1300 K and 3100 K, respectively. A water vapour discharge laser was used as the LO source. The largest gain bandwidth of 5.2 GHz was achieved for a mixer based on 2 nm thick NbN film deposited on MgO layer over Si substrate. The gain bandwidth of the mixer based on 3.5 nm NbN film deposited on Si with MgO is 4.2 GHz and the noise bandwidth for the same device amounts to 5 GHz. We also present the results of our research into decrease of the direct detection contribution to the measured Y-factor and a possible error of noise temperature calculation. The use of a square nickel cell mesh as an IR-filter enabled us to avoid the effect of direct detection and measure apparent value of the noise temperature which was 16% less than that obtained using conventional black polyethylene IR-filter. |
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Terahertz and Gigahertz Electronics and Photonics IV |
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378 |
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Baselmans, J. J. A.; Baryshev, A.; Reker, S. F.; Hajenius, M.; Gao, J. R.; Klapwijk, T. M.; Vahtomin, Yu.; Maslennikov, S.; Antipov, S.; Voronov, B.; Gol'tsman, G. |
Title |
Direct detection effect in small volume hot electron bolometer mixers |
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Journal Article |
Year |
2005 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
Volume |
86 |
Issue |
16 |
Pages |
163503 (1 to 3) |
Keywords |
HEB, mixer, direct detection effect |
Abstract |
We measure the direct detection effect in a small volume (0.15μm×1μm×3.5nm)(0.15μm×1μm×3.5nm) quasioptical NbN phonon cooled hot electronbolometermixer at 1.6THz1.6THz. We find that the small signal sensitivity of the receiver is underestimated by 35% due to the direct detection effect and that the optimal operating point is shifted to higher bias voltages when using calibration loads of 300K300K and 77K77K. Using a 200GHz200GHzbandpass filter at 4.2K4.2K the direct detection effect virtually disappears. This has important implications for the calibration procedure of these receivers in real telescope systems. |
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377 |
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Finkel, M. I.; Maslennikov, S. N.; Gol'tsman, G. N. |
Title |
Terahertz heterodyne receivers based on superconductive hot-electron bolometer mixers |
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Journal Article |
Year |
2005 |
Publication |
Radiophys. Quant. Electron. |
Abbreviated Journal |
Radiophys. Quant. Electron. |
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48 |
Issue |
10-11 |
Pages |
859-864 |
Keywords |
HEB, applications |
Abstract |
We consider recent results in development of hot-electron bolometer mixers. Special attention is paid to optimization of the contacts between the antenna and the active area of a superconducting film. An important result in the study of the parasitic effect of direct detection is obtained during the measurement of the noise temperatures by the hot/cold load method. The latest results of studies of the waveguide hot-electron bolometer mixers and their successful practical applications are considered. Progress in development of high-frequency (over 1.3 THz) heterodyne receivers for several important international projects is discussed and new submillimeter radio astronomy projects ESPRIT and SAFIR are described. |
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0033-8443 |
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381 |
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Hajenius, M.; Baselmans, J. J. A.; Baryshev, A.; Gao, J. R.; Klapwijk, T. M.; Kooi, J. W.; Jellema, W.; Yang, Z. Q. |
Title |
Full characterization and analysis of a terahertz heterodyne receiver based on a NbN hot electron bolometer |
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Journal Article |
Year |
2006 |
Publication |
J. Appl. Phys. |
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Volume |
100 |
Issue |
7 |
Pages |
074507 |
Keywords |
HEB |
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0021-8979 |
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RPLAB @ s @ |
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385 |
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Author |
Maslennikov, S. N.; Finkel, M. I.; Antipov, S. V.; Polyakov, S. L.; Zhang, W.; Ozhegov, R.; Vachtomin, Yu. B.; Svechnikov, S. I.; Smirnov, K. V.; Korotetskaya, Yu. P.; Kaurova, N. S.; Gol'tsman, G. N.; Voronov, B. M. |
Title |
Spiral antenna coupled and directly coupled NbN HEB mixers in the frequency range from 1 to 70 THz |
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Conference Article |
Year |
2006 |
Publication |
Proc. 17th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 17th Int. Symp. Space Terahertz Technol. |
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Pages |
177-179 |
Keywords |
directly coupled NbN HEB mixers |
Abstract |
We investigate both antenna coupled and directly coupled HEB mixers at several LO frequencies within the range of 2.5 THz to 70 THz. H20 (2.5+10.7 THz), and CO2 (30 THz) gas discharge lasers are used as the local oscillators. The noise temperature of antenna coupled mixers is measured at LO frequencies of 2.5 THz, 3.8 THz, and 30 THz. The results for both antenna coupled and directly coupled mixer types are compared. The devices with in—plane dimensions of 5x5 ,um 2 are pumped by LO radiation at 10.7 THz. The directly coupled HEB demonstrates nearly flat dependence of responsivity on frequency in the range of 25+64 THz. |
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Paris, France |
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386 |
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Author |
Gershenzon, E. M.; Gol'tsman, G. N.; Elantiev, A. I.; Karasik, B. S.; Potoskuev, S. E. |
Title |
Intense electromagnetic radiation heating of electrons of a superconductor in the resistive state |
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Journal Article |
Year |
1988 |
Publication |
Sov. J. Low Temp. Phys. |
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Sov. J. Low Temp. Phys. |
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14 |
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7 |
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414-420 |
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HEB |
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Duplicated as 1697 |
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236 |
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Author |
Gershenzon, E. M.; Goltsman, G. N.; Semenov, A. D.; Sergeev, A. V. |
Title |
Limiting characteristic of fast superconducting bolometers |
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Journal Article |
Year |
1989 |
Publication |
Sov. Phys.-Tech. Phys. |
Abbreviated Journal |
Sov. Phys.-Tech. Phys. |
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34 |
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195-199 |
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HEB |
Abstract |
Теоретически и экспериментально исследовано физическое ограничение быстродействия сверхпроводящего болометра. Показано, что минимальная постоянная времени реализуется в условиях электронного разогрева и определяется процессом неупругого электрон-фонон- ного взаимодействия. Сформулированы требования кконструкции «электронного болометра» для достижения предельной чувствительности. Проведено сравнение характеристик электронного болометра и обычных болометров различных типов. |
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О предельных характеристиках быстродействующих серхпроводниковых болометров |
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237 |
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Гершензон, Е. М.; Гершензон, М. Е.; Гольцман, Г. Н.; Люлькин, А. М.; Семенов, А. Д.; Сергеев, А. В. |
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О предельных характеристиках быстродействующих серхпроводниковых болометров |
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Journal Article |
Year |
1989 |
Publication |
Журнал технической физики |
Abbreviated Journal |
Журнал технической физики |
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59 |
Issue |
2 |
Pages |
111-120 |
Keywords |
HEB |
Abstract |
Теоретически и экспериментально исследовано физическое ограничение быстродействия сверхпроводящего болометра. Показано, что минимальная постоянная времени реализуется в условиях электронного разогрева и определяется процессом неупругого электрон-фонон- ного взаимодействия. Сформулированы требования кконструкции «электронного болометра» для достижения предельной чувствительности. Проведено сравнение характеристик электронного болометра и обычных болометров различных типов. |
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Russian |
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Duplicated as 237 |
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238 |
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