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Смирнов, К. В. |
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AlGaAs/GaAs смеситель на эффекте разогрева двумерных электронов для тепловизора субмиллиметрового диапазона |
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2003 |
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Тезисы докладов VI Российской конференции по физике полупроводников |
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181 |
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2DEG, AlGaAs/GaAs heterostructures, mixer |
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ФТИ им. А. Ф. Иоффе, Санк-Петербург |
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VI Российской конференции по физике полупроводников (27-31 октября) |
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Unconfirmed; Сама конференция, однако, была -- её упоминают: [http://www.nsc.ru/HBC/article.phtml?nid=271&id=17], [https://www.isp.nsc.ru/institut/nauchnye-podrazdeleniya/lab-20/publikatsii/2003], [http://www.ioffe.ru/sem_tech/sem%5Fteh%5Fmovpe%5Fpublications%5Fru.htm#R2003], [https://istina.ips.ac.ru/collections/828771/] |
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1837 |
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Billade, Bhushan; Belitsky, Victor; Pavolotsky, Alexey; Lapkin, Igor; Kooi, Jacob |
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Title |
ALMA band 5 (163-211 GHz) sideband separation mixer |
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Conference Article |
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2009 |
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Proc. 20th Int. Symp. Space Terahertz Technol. |
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19-23 |
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SIS mixer, noise temperature, ALMA, band 5 |
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We present the design of ALMA Band 5 sideband separation SIS mixer and experimental results for the double side band mixer and first measurement results 2SB mixer. In this mixer, the LO injection circuitry is integrated on the mixer substrate using a directional coupler, combining microstrip lines with slot-line branches in the ground plane. The isolated port of the LO coupler is terminated by wideband floating elliptical termination. The mixer employs two SIS junctions with junction area of 3 µm² each, in the twin junction configuration, followed by a quarter wave transformer to match the RF probe. 2SB mixer uses two identical but mirrored chips, whereas each DSB mixer has the same end-piece configuration. The 2S mixer has modular design such that DSB mixers are measured independently and then integrated into 2SB simply by placing around the middle piece. Measurements of the DSB mixer show noise temperature of around 40K over the entire band. 2SB mixer is not fully characterized yet, however, preliminary measurement indicates SSB (un-corrected) noise temperature of 80K. |
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616 |
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Eletskii, A. V.; Sarychev, A. K.; Boginskaya, I. A.; Bocharov, G. S.; Gaiduchenko, I. A.; Egin, M. S.; Ivanov, A. V.; Kurochkin, I. N.; Ryzhikov, I. A.; Fedorov, G. E. |
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Amplification of a Raman scattering signal by carbon nanotubes |
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2018 |
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Dokl. Phys. |
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Dokl. Phys. |
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63 |
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12 |
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496-498 |
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carbon nanotubes, CNT, Raman scattering, RLS |
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The effect of Raman scattering (RLS) signal amplification by carbon nanotubes (CNTs) was studied. Single-layered nanotubes were synthesized by the chemical vapor deposition (CVD) method using methane as a carbon-containing gas. The object of study used was water, the Raman spectrum of which is rather well known. Amplification of the Raman scattering signal by several hundred percent was attained in our work. The maximum amplification of a Raman scattering signal was shown to be achieved at an optimal density of nanotubes on a substrate. This effect was due to the scattering and screening of plasmons excited in CNTs by neighboring nanotubes. The amplification mechanism and the possibilities of optimization for this effect were discussed on the basis of the theory of plasmon resonance in carbon nanotubes. |
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1028-3358 |
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1775 |
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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. |
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An 800 GHz NbN phonon-cooled hot-electron bolometer mixer receiver |
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1999 |
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IEEE Trans. Appl. Supercond. |
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IEEE Trans. Appl. Supercond. |
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9 |
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2 |
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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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Merkel, H. F.; Khosropanah, P.; Sigfrid Yngvesson, K.; Cherednichenko, S.; Kroug, M.; Adam, A.; Kollberg, E. |
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An active zone small signal model for hot-electron bolometric mixers |
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2001 |
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Proc. 12th Int. Symp. Space Terahertz Technol. |
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55 |
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San Diego, CA, USA |
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RPLAB @ s @ losses_in_contacts_merkel |
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