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Author |
Huebers, H.-W.; Schubert, J.; Semenov, A.; Gol’tsman, G. N.; Voronov, B. M.; Gershenzon, E. M.; Schwaab, G. W. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
NbN phonon-cooled hot-electron bolometer as a mixer for THz heterodyne receivers |
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Conference Article |
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Year |
1999 |
Publication |
Proc. SPIE |
Abbreviated Journal |
Proc. SPIE |
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Volume |
3828 |
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Pages |
410-416 |
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Keywords |
NbN HEB mixers |
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Abstract |
We have investigated a phonon-cooled NbN hot electron bolometric (HEB) mixer in the frequency range from 0.7 THz to 5.2 THz. The device was a 3.5 nm thin film with an in- plane dimension of 1.7 X 0.2 micrometers 2 integrated in a complementary logarithmic spiral antenna. The measured DSB receiver noise temperatures are 1500 K, 2200 K, 2600 K, 2900 K, 4000 K, 5600 K and 8800 K. The sensitivity fluctuation, the long term stability, and the antenna pattern were measured and the suitability of the mixer for a practical heterodyne receiver is discussed. |
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Chamberlain, J.M. |
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Terahertz Spectroscopy and Applications II |
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1477 |
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Yngvesson, K. S.; Gerecht, E.; Musante, C. F.; Zhuang, Y.; Ji, M.; Goyette, T. M.; Dickinson, J. C.; Waldman, J.; Yagoubov, P. A.; Gol’tsman, G. N.; Voronov, B. M.; Gershenzon, E. M. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Low-noise HEB heterodyne receivers and focal plane arrays for the THz regime using NbN |
Type |
Conference Article |
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Year |
1999 |
Publication |
Proc. SPIE |
Abbreviated Journal |
Proc. SPIE |
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Volume |
3795 |
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Pages |
357-368 |
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Keywords |
NbN HEB mixers |
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We have developed prototype HEB receivers using thin film superconducting NbN devices deposited on silicon substrates. The devices are quasi-optically coupled through a silicon lens and a self-complementary log-specific toothed antenna. We measured DSB receiver noise temperatures of 500 K (13 X hf/2k) at 1.56 THz and 1,100 K (20 X hf/2k) at 2.24 THz. Noise temperatures are expected to fall further as devices and quasi-optical coupling methods are being optimized. The measured 3 dB IF conversion gain bandwidth for one device was 3 GHz, and it is estimated that the bandwidth over which the receiver noise temperature is within 3 dB of its minimum value is 6.5 GHz which is sufficient for a number of practical applications. We will discuss our latest results and give a detailed description of our prototype setup and experiments. We will also discuss our plans for developing focal plane arrays with tens of Hot Electron Bolometric mixer elements on a single silicon substrate which will make real time imaging systems in the THz region feasible. |
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Hwu, R.J.; Wu, K. |
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Terahertz and Gigahertz Photonics |
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1561 |
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Kawamura, J. H.; Tong, C.-Y.E.; Blundell, R.; Cosmo Papa, D.; Hunter, T. R.; Gol'tsman, G.; Cherednichenko, S.; Voronov, B.; Gershenzon, E. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
An 800 GHz NbN phonon-cooled hot-electron bolometer mixer receiver |
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Journal Article |
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Year |
1999 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
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Volume |
9 |
Issue |
2 |
Pages |
3753-3756 |
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NbN HEB mixers |
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We describe a heterodyne receiver developed for astronomical applications to operate in the 350 /spl mu/m atmospheric window. The waveguide receiver employs a superconductive NbN phonon-cooled hot-electron bolometer mixer. The double sideband receiver noise temperature closely follows 1 kGHz/sup -1/ across 780-870 GHz, with the intermediate frequency centered at 1.4 GHz. The conversion loss is about 15 dB. The receiver was installed for operation at the University of Arizona/Max Planck Institute for Radio Astronomy Submillimeter Telescope facility. The instrument was successfully used to conduct test observations of a number of celestial sources in a number of astronomically important spectral lines. |
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1051-8223 |
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288 |
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Author |
Galin, I.; Schnitzer, C. A.; Dengler, R. J.; Quintero, O. |
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Title |
177–207 GHz radiometer front end, single–side–band measurements |
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1999 |
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Proc. 10th Int. Symp. Space Terahertz Technol. |
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70 |
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Charlottesville, Virginia, USA |
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RPLAB @ s @ schottky_Tn_1000_at_0p2THz |
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289 |
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Marazita, St.even M.; Kai Hui; Hesler, Jeffrey L.; Bishop, William L.; Crowe, Thomas W. |
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Title |
Progress in submillimeter wavelength integrated mixer technology |
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Conference Article |
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Year |
1999 |
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Proc. 10th Int. Symp. Space Terahertz Technol. |
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74 |
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Charlottesville, Virginia |
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RPLAB @ s @ schottky_Tn_2970_at_0p69THz |
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290 |
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Author |
Hesler, Jeffrey L.; Hui, Kai; Crowe, Thomas W. |
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Title |
A fixed–tuned 400 GHz subharmonic mixer using planar Schottky diods |
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Conference Article |
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1999 |
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Proc. 10th Int. Symp. Space Terahertz Technol. |
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95 |
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Charlottesville, Virginia, USA |
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RPLAB @ s @ schottky_Tn_1120_at_0p42THz |
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291 |
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Author |
Merkel, H.; Khosropanah, P.; Yagubov, P.; Kollberg, E. |
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Title |
A hot spot mixer model for superconducting phonone–cooled HEB far above the quasipartical band gap |
Type |
Conference Article |
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Year |
1999 |
Publication |
Proc. 10th Int. Symp. Space Terahertz Technol. |
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592-606 |
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Charlottesville, Virginia |
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292 |
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Wyss, R. A.; Karasik, B. S.; McGrath, W. R.; Bamble, B.; LeDuc, H. |
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Title |
Noise and bandwidth measurements of diffusion–cooled Nb hot–electron bolometer mixers at frequencies above the superconductive energy gap |
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Conference Article |
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1999 |
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Proc. 10th Int. Symp. Space Terahertz Technol. |
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215-229 |
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Charlottesville, Virginia |
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RPLAB @ s @ qoheb_Tn_1250_at_1p1 |
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293 |
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Author |
Yagoubov, Pavel; Kroug, Matthias; Merkel, Harald; Kollberg, Erik; Schubert, Josef; Hübers, Heinz-Wilhelm |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
NbN hot electron bolometric mixers at frequencies between 0.7 and 3.1 THz |
Type |
Journal Article |
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Year |
1999 |
Publication |
Supercond. Sci. Technol. |
Abbreviated Journal |
Supercond. Sci. Technol. |
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Volume |
12 |
Issue |
11 |
Pages |
989-991 |
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Keywords |
NbN HEB mixers |
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The performance of NbN-based phonon-cooled hot electron bolometric (HEB) quasioptical mixers is investigated in the 0.7-3.1 THz frequency range. The devices are made from a 3.5-4 nm thick NbN film on high resistivity Si and integrated with a planar spiral antenna on the same substrate. The length of the bolometer microbridge is 0.1-0.2 µm; the width is 1-2 µm. The best results of the DSB receiver noise temperature measured at 1.5 GHz intermediate frequency are: 800 K at 0.7 THz, 1100 K at 1.6 THz, 2000 K at 2.5 THz and 4200 K at 3.1 THz. The measurements were performed with a far infrared laser as the local oscillator (LO) source. The estimated LO power requirement is less than 500 nW at the receiver input. First results on spiral antenna polarization measurements are reported. |
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0953-2048 |
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295 |
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Yagoubov, P.; Kroug, M.; Merkel, H.; Kollberg, E.; Schubert, J.; Hubers, H. W.; Svechnikov, S.; Voronov, B.; Gol'tsman, G.; Wang, Z. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Hot electron bolometric mixers based on NbN films deposited on MgO substrates |
Type |
Conference Article |
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Year |
1999 |
Publication |
Inst. Phys. Conf. Ser. |
Abbreviated Journal |
Inst. Phys. Conf. Ser. |
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Volume |
167 |
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687-690 |
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Barcelona, Spain |
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4th Europ. Conf. on Appl. Superconductivity, Inst. Phys. Conf. Ser. |
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297 |
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