| Records |
| Author |
Klaassen, T. O.; Hovenier, J. N.; Adam, A. J. L.; Fischer, J.; Jakob, G.; Poglitsch, A.; Redlich, B. |
| Title |
Terahertz calorimetry for the Herschel Space Observatory |
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Conference Article |
| Year |
2004 |
Publication |
Proc. 29th IRMMW / 12th THz |
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815-816 |
| Keywords |
mirror, reflection index, emissivity, calorimetry, space observatory, terahertz, THz |
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578 |
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Pan, S. K.; A. R. Kerr, M. W. Pospieszalski; Lauria, E. F.; Crady, W. K.; Horner, N.; Srikanth, Jr. S.; Bryerton, E.; Saini, K.; Claude, S. M. X.; Chin, C. C.; Dindo, P.; Rodrigues, G.; Derdall, D.; Zhang, J. Z.; Lichtenberger, A. W. |
| Title |
A fixed-tuned integrated SIS mixer with ultra-wideband IF and quantum-limited sensitivity for ALMA band 3 (84-116 GHz) receivers |
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Conference Article |
| Year |
2004 |
Publication |
Proc. 15th Int. Symp. Space Terahertz Technol. |
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55-61 |
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Northampton, MA |
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RPLAB @ s @ SIS_bandw_8GHz |
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358 |
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Yorke, Harold W.; Paine, Christopher G.; Bradford, Charles M.; Mark Dragovan; Nash, Al E.; Dooley, Jennifer A.; Lawrence, Charles R. |
| Title |
Thermal design trades for SAFIR architecture concepts |
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Conference Article |
| Year |
2004 |
Publication |
Proc. SPIE |
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5487 |
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Pages |
1617-1624 |
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RPLAB @ s @ sun_shield_SAFIR_SPIE_2004 |
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340 |
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Vachtomin, Y. B.; Antipov, S. V.; Maslennikov, S. N.; Smirnov, K. V.; Polyakov, S. L.; Kaurova, N. S.; Grishina, E. V.; Voronov, B. M.; Gol'tsman, G. N. |
| Title |
Noise temperature measurements of NbN phonon-cooled hot electron bolometer mixer at 2.5 and 3.8 THz |
Type |
Conference Article |
| Year |
2004 |
Publication |
Proc. 15th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 15th Int. Symp. Space Terahertz Technol. |
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236-241 |
| Keywords |
HEB mixer, NbN, direct detection effect |
| Abstract |
We present the results of noise temperature measurements of NbN phonon-cooled HEB mixers based on a 3.5 nm NbN film deposited on a high-resistivity Si substrate with a 200 nm – thick 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 µm x 0.2 µm 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. We also present the results of direct detection contribution to the measured Y-factor and of a possible error of noise temperature calculation. This error was more than 8% for the mixer with in-plane dimensions of 2.4 x 0.16 µm 2 at the optimal noise temperature point. The use of a mesh filter enabled us to avoid the effect of direct detection and decrease optical losses by 0.5 dB. The paper is concluded by the investigation results of the mixer polarization response. It was shown that the polarization can differ from the circular one at 3.8 THz by more than 2 dB. |
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Northampton, Massachusetts, USA |
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344 |
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Ozhegov, R.; Morozov, D.; Maslennikov, S.; Okunev, O.; Smirnov, K.; Gol'tsman, G. |
| Title |
Submillimeter wave range imaging system for registering human body radiation and finding out the things covered under clothes |
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Conference Article |
| Year |
2004 |
Publication |
Proc. 3rd Int. exhibition and conf. Non-Destructive Testing Equipment and Devices |
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Moscow |
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345 |
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