| 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 |
Type |
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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no |
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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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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 |
Type |
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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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 |
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592-594 |
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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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Baselmans, J. J. A.; Hajenius, M.; Gao, J. R.; Klapwijk, T. M.; de Korte, P. A. J.; Voronov, B.; Gol'tsman, G. |
| Title |
Doubling of sensitivity and bandwidth in phonon cooled hot electron bolometer mixers |
Type |
Journal Article |
| Year |
2004 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
84 |
Issue |
11 |
Pages |
1958-1960 |
| Keywords |
NbN HEB mixers |
| Abstract |
We demonstrate that the performance of NbN lattice cooled hot electron bolometer mixers depends strongly on the interface quality between the bolometer and the contact structure. We show experimentally that both the receiver noise temperature and the gain bandwidth can be improved by more than a factor of 2 by cleaning the interface and adding an additional superconducting interlayer to the contact pad. Using this we obtain a double sideband receiver noise temperature TN,DSB=950 K
at 2.5 THz and 4.3 K, uncorrected for losses in the optics. At the same bias point, we obtain an IF gain bandwidth of 6 GHz. |
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