| Records |
| Author |
Semenov, A.; Engel, A.; Il'in, K.; Gol'tsman, G.; Siegel, M.; Hübers, H.-W. |
| Title |
Ultimate performance of a superconducting quantum detector |
Type |
Journal Article |
| Year |
2003 |
Publication |
Eur. Phys. J. Appl. Phys. |
Abbreviated Journal |
Eur. Phys. J. Appl. Phys. |
| Volume |
21 |
Issue |
3 |
Pages |
171-178 |
| Keywords |
NbN SSPD, SNSPD |
| Abstract |
We analyze the ultimate performance of a superconducting quantum detector in order to meet requirements for applications in near-infrared astronomy and X-ray spectroscopy. The detector exploits a combined detection mechanism, in which avalanche quasiparticle multiplication and the supercurrent jointly produce a voltage response to a single absorbed photon via successive formation of a photon-induced and a current-induced normal hotspot in a narrow superconducting strip. The response time of the detector should increase with the photon energy providing energy resolution. Depending on the superconducting material and operation conditions, the cut-off wavelength for the single-photon detection regime varies from infrared waves to visible light. We simulated the performance of the background-limited infrared direct detector and X-ray photon counter utilizing the above mechanism. Low dark count rate and intrinsic low-frequency cut-off allow for realizing a background limited noise equivalent power of 10−20 W Hz−1/2 for a far-infrared direct detector exposed to 4-K background radiation. At low temperatures, the intrinsic response time of the counter is rather determined by diffusion of nonequilibrium electrons than by the rate of energy transfer to phonons. Therefore, thermal fluctuations do not hamper energy resolution of the X-ray photon counter that should be better than 10−3 for 6-keV photons. Comparison of new data obtained with a Nb based detector and previously reported results on NbN quantum detectors support our estimates of ultimate detector performance. |
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1286-0042 |
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534 |
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Semenov, A. D.; Il'in, K.; Siegel, M.; Smirnov, A.; Pavlov, S.; Richter, H.; Hübers, H.-W. |
| Title |
Evidence of non-bolometric mixing in the bandwidth of a hot-electron bolometer |
Type |
Journal Article |
| Year |
2006 |
Publication |
Superconductor Science and Technology |
Abbreviated Journal |
Supercond. Sci. Technol. |
| Volume |
19 |
Issue |
10 |
Pages |
1051-1056 |
| Keywords |
HEB |
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0953-2048 |
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Semenov, Alexei; Il'yin, Konstantin; Siegel, Michael; Smirnov, Andrey; Pavlov, Sergey; Richter, Heiko; Hübers, Heinz-Wilhelm |
| Title |
Intermediate frequency bandwidth of a hot-electron mixer: Comparision with bolometric models |
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Conference Article |
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2006 |
Publication |
Proc. 17th Int. Symp. Space Terahertz Technol. |
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73-76 |
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HEB |
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Paris, France |
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537 |
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Semenov, Alexei D.; Richter, Heiko; Hubers, Heinz-Wilhelm; Gunther, Burghardt.; Smirnov, Andrey; Il'in, Konstantin S.; Siegel, Michael; Karamarkovic, Jugoslav P. |
| Title |
Terahertz performance of integrated lens antennas with a hot-electron bolometer |
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Journal Article |
| Year |
2007 |
Publication |
IEEE Trans. Microw. Theory Techn. |
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55 |
Issue |
2 |
Pages |
239-247 |
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HEB, lens antenna |
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0018-9480 |
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538 |
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Lee, Ju-Hyun; Kim, Dong-Woo; Wu, Yung-Hsun; Yu, Chang-Jae; Lee, Sin-Doo; Wu, Shin-Tson |
| Title |
High-speed infrared phase modulators using short helical pitch ferroelectric liquid crystals |
Type |
Journal Article |
| Year |
2005 |
Publication |
Optics Express |
Abbreviated Journal |
Opt. Express |
| Volume |
13 |
Issue |
20 |
Pages |
7732 |
| Keywords |
IR modulator |
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1094-4087 |
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541 |
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