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Korneeva, Yuliya; Florya, Irina; Vdovichev, Sergey; Moshkova, Mariya; Simonov, Nikita; Kaurova, Natalia; Korneev, Alexander; Goltsman, Gregory |
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Title |
Comparison of hot-spot formation in NbN and MoN thin superconducting films after photon absorption |
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Conference Article |
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Year |
2017 |
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IEEE Transactions on Applied Superconductivity |
Abbreviated Journal |
IEEE Transactions on Applied Superconductiv |
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27 |
Issue |
4 |
Pages |
5 |
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Keywords |
Thin film devices, Superconducitng photoncounting devices, Nanowire single-photon detectors |
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Abstract |
In superconducting single-photon detectors SSPD
the efficiency of local suppression of superconductivity and hotspot
formation is controlled by diffusivity and electron-phonon
interaction time. Here we selected a material, 3.6-nm-thick MoNx
film, which features diffusivity close to those of NbN traditionally
used for SSPD fabrication, but with electron-phonon interaction
time an order of magnitude larger. In MoNx detectors we study
the dependence of detection efficiency on bias current, photon
energy, and strip width and compare it with NbN SSPD. We
observe non-linear current-energy dependence in MoNx SSPD
and more pronounced plateaus in dependences of detection
efficiency on bias current which we attribute to longer electronphonon
interaction time. |
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RPLAB @ kovalyuk @ |
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1114 |
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Author |
Lubzens, D.; Rosenfeld, D.; Nemirovsky, Y. |
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Title |
The noise equivalent temperature difference performance of HgCdTe photodiode array |
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Journal Article |
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Year |
1988 |
Publication |
Infrared Physics |
Abbreviated Journal |
Infrared Physics |
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28 |
Issue |
6 |
Pages |
417-423 |
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HgCdTe detector array |
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0020-0891 |
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469 |
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González, F. J.; Boreman, G. D. |
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Title |
Comparison of dipole, bowtie, spiral and log-periodic IR antennas |
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Journal Article |
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2005 |
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Infrared Physics & Technology |
Abbreviated Journal |
Inf Phys & Technol |
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46 |
Issue |
5 |
Pages |
418-428 |
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Keywords |
optical antennas; Microbolometer; Infrared antennas; Antenna efficiency; Antenna-coupled detectors |
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Antenna-coupled microbolometers use planar lithographic antennas to couple infrared radiation into a bolometer with sub-micron dimensions. In this paper four different types of infrared antennas were fabricated on thin grounded-substrates and coupled to microbolometers. Dipole, bowtie, spiral and log-periodic IR antenna-coupled detectors were measured at 10.6 μm and their performance compared. A new method to calculate the radiation efficiency based on the spatial and angular response of infrared antennas is presented and used to evaluate their performance. The calculated radiation efficiency for the dipole, bowtie, spiral and log-periodic IR antennas was 20%, 37%, 25% and 46% respectively. A dipole-length study was performed and shows that the quasistatic value of the effective permittivity accurately describes the incident wavelength in the substrate at infrared frequencies for antennas on a thin substrate. |
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RPLAB @ gujma @ |
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739 |
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Author |
Kostiuk, T.; Spears, D. |
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Title |
30 μm heterodyne receiver |
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1987 |
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Int. J. Infrared and Millimeter Waves |
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8 |
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10 |
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1269-1279 |
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HgCdTe detector mixer |
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235 |
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Author |
Parvitte, B.; Thomas, X.; Courtois, D. |
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Wide band (2.5 GHz) infrared heterodyne spectrometer |
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1995 |
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Int. J. Infrared and Millimeter Waves |
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16 |
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9 |
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1533-1540 |
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HgCdTe detector mixer |
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0195-9271 |
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470 |
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