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| Title |
Single aperture far-infrared observatory |
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2005 |
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no |
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RPLAB @ s @ safir_proj |
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379 |
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| Author |
Goizel, Annesco; Smith, David |
| Title |
Thermometry down to 300 mK for space instrumentation |
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Miscellaneous |
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2005 |
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RPLAB @ s @ |
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444 |
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ГОСТ Р 51904-2002. Программное обеспечение встроенных систем. Общие требования к разработке и документированию |
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Book Whole |
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2005 |
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gost, detproj |
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no |
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875 |
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Gao, J. R.; Hovenier, J. N.; Yang, Z. Q.; Baselmans, J. J. A.; Baryshev, A.; Hajenius, M.; Klapwijk, T. M.; Adam, A. J. L.; Klaassen, T. O.; Williams, B. S.; Kumar, S.; Hu, Q.; Reno, J. L. |
| Title |
Terahertz heterodyne receiver based on a quantum cascade laser and a superconducting bolometer |
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Journal Article |
| Year |
2005 |
Publication |
Appl. Phys. Lett. |
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86 |
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art.num. 244104 |
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RPLAB @ s @ qc_lasers_gao |
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368 |
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Baselmans, J. J. A.; Baryshev, A.; Reker, S. F.; Hajenius, M.; Gao, J. R.; Klapwijk, T. M.; Vahtomin, Yu.; Maslennikov, S.; Antipov, S.; Voronov, B.; Gol'tsman, G. |
| Title |
Direct detection effect in small volume hot electron bolometer mixers |
Type |
Journal Article |
| Year |
2005 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
86 |
Issue |
16 |
Pages |
163503 (1 to 3) |
| Keywords |
HEB, mixer, direct detection effect |
| Abstract |
We measure the direct detection effect in a small volume (0.15μm×1μm×3.5nm)(0.15μm×1μm×3.5nm) quasioptical NbN phonon cooled hot electronbolometermixer at 1.6THz1.6THz. We find that the small signal sensitivity of the receiver is underestimated by 35% due to the direct detection effect and that the optimal operating point is shifted to higher bias voltages when using calibration loads of 300K300K and 77K77K. Using a 200GHz200GHzbandpass filter at 4.2K4.2K the direct detection effect virtually disappears. This has important implications for the calibration procedure of these receivers in real telescope systems. |
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no |
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377 |
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Gao, J. R.; Hovenier, J. N.; Yang, Z. Q.; Baselmans, J. J. A.; Baryshev, A.; Hajenius, M.; Klapwijk, T. M.; Adam, A. J. L.; Klaassen, T. O.; Williams, B. S.; Kumar, S.; Hu, Q.; Reno, J. L. |
| Title |
Terahertz heterodyne receiver based on a quantum cascade laser and a superconducting bolometer |
Type |
Journal Article |
| Year |
2005 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
86 |
Issue |
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Pages |
244104 (1 to 3) |
| Keywords |
HEB, QCL |
| Abstract |
We report the first demonstration of an all solid-stateheterodyne receiver that can be used for high-resolution spectroscopy above 2THz suitable for space-based observatories. The receiver uses a NbN superconducting hot-electron bolometer as mixer and a quantum cascade laser operating at 2.8THz as local oscillator. We measure a double sideband receiver noise temperature of 1400K at 2.8THz and 4.2K, and find that the free-running QCL has sufficient power stability for a practical receiver, demonstrating an unprecedented combination of sensitivity and stability. |
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no |
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Serial |
905 |
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| Author |
Hübers, H.-W.; Semenov, A.; Holldack, K.; Schade, U.; Wüstefeld, G.; Gol’tsman, G. |
| Title |
Time domain analysis of coherent terahertz synchrotron radiation |
Type |
Journal Article |
| Year |
2005 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
87 |
Issue |
18 |
Pages |
184103 (1 to 3) |
| Keywords |
NbN HEB mixers, applications |
| Abstract |
The time structure of coherent terahertz synchrotron radiation at the electron storage ring of the Berliner Elektronensynchrotron und Speicherring Gesellschaft has been analyzed with a fast superconducting hot-electron bolometer. The emission from a single bunch of electrons was found to last ∼1500ps at frequencies around 0.4THz, which is much longer than the length of an electron bunch in the time domain (∼5ps). It is suggested that this is caused by multiple reflections at the walls of the beam line. The quadratic increase of the power with the number of electrons in the bunch as predicted for coherent synchrotron radiation and the transition from stable to bursting radiation were determined from a single storage ring fill pattern of bunches with different populations. |
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0003-6951 |
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no |
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Serial |
1457 |
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| Author |
An, Zhenghua; Chen, Jeng-Chung; Ueda, T.; Komiyama, S.; Hirakawa, K. |
| Title |
Infrared phototransistor using capacitively coupled two-dimensional electron gas layers |
Type |
Journal Article |
| Year |
2005 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
86 |
Issue |
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Pages |
172106 - 172106-3 |
| Keywords |
2DEG |
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no |
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RPLAB @ akorneev @ |
Serial |
603 |
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| Author |
Barends, R.; Hajenius, M.; Gao, J. R.; Klapwijk, T. M. |
| Title |
Current-induced vortex unbinding in bolometer mixers |
Type |
Journal Article |
| Year |
2005 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
87 |
Issue |
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Pages |
263506 (1 to 3) |
| Keywords |
HEB mixer numerical model, HEB model, IV-curves, vortex-antivortex, Berezinskii–Kosterlitz–Thouless theory, diffusion cooling channel, diffusion channel, distributed HEB model, distributed model, self-heating effect, temperature profile |
| Abstract |
We present a description of the current-voltage characteristics of hot electron bolometers in terms of the current-dependent intrinsic resistive transition of NbN films. We find that, by including this current dependence, we can correctly predict the complete current-voltage characteristics, showing excellent agreement with measurements for both low and high bias and for small as well as large devices. It is assumed that the current dependence is due to vortex-antivortex unbinding as described in the Berezinskii–Kosterlitz–Thouless theory. The presented approach will be useful in guiding device optimization for noise and bandwidth. |
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no |
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604 |
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de Graauw, T.; Caux, E.; Guesten, R.; Helmich, F.; Pearson, J.; Phillips, T. G.; Schieder, R.; Tielens, X.; Saraceno, P.; Stutzki, J.; Wafelbakker, C. K.; Whyborn, N. D. |
| Title |
The Herschel-heterodyne instrument for the far-infrared (HIFI) |
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Conference Article |
| Year |
2005 |
Publication |
Bulletin of the American Astronomical Society |
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Issue |
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Pages |
1219 |
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Bulletin of the American Astronomical Society |
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37 |
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no |
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ref2005AAS...207.3503D |
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420 |
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Słysz, W.; Węgrzecki, M.; Bar, J.; Grabiec, P.; Gol'tsman, G. N.; Verevkin, A.; Sobolewski, R. |
| Title |
NbN superconducting single-photon detector coupled with a communication fiber |
Type |
Journal Article |
| Year |
2005 |
Publication |
Elektronika : konstrukcje, technologie, zastosowania |
Abbreviated Journal |
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46 |
Issue |
6 |
Pages |
51-52 |
| Keywords |
NbN SSPD, SNSPD |
| Abstract |
We present novel superconducting single-photon detectors (SSPDs), based on ultrathin NbN films, designed for fiber-based quantum communications (lambda = 1.3 žm and 1.55 žm). For fiber-based operation, our SSPDs contain a special micromechanical construction integrated with the NbN structure, which enables efficient and mechanically very stabile fiber coupling. The detectors combine GHz counting rate, high quantum efficiency and very low level of dark counts. At 1.3 – 1.55 žm wavelength range our detector exhibits a quantum efficiency up to 10%. |
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Polish |
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no |
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Serial |
1481 |
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| Author |
Gonzalez, F.J.; Ilic, B.; Alda, J.; Boreman, G.D. |
| Title |
Antenna-coupled infrared detectors for imaging applications |
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Journal Article |
| Year |
2005 |
Publication |
IEEE J. Sel. Topics Quantum Electron. |
Abbreviated Journal |
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| Volume |
11 |
Issue |
1 |
Pages |
117 - 120 |
| Keywords |
optical antennas |
| Abstract |
Infrared focal plane arrays (IRFPAs) are a critical component in advanced infrared imaging systems. IRFPAs are made up of two parts, a detector array and a readout integrated circuit (ROIC) multiplexer. Current ROIC technology has typical pitch sizes of 20×20 to 50×50 μm2. In order to make antenna-coupled detectors suited for infrared imaging systems, two-dimensional (2-D) arrays have been fabricated that cover a whole pixel area with the penalty of increasing the noise figure of the detector and, therefore, reducing its performance. By coupling a Fresnel zone plate lens to a single element antenna-coupled detector, infrared radiation can be collected over a typical pixel area and still keep low-noise levels. A Fresnel zone plate lens coupled to a single-element square-spiral-coupled infrared detector has been fabricated and its performance compared to single element antenna-coupled detectors and 2-D arrays of antenna coupled detectors. Measurements made at 10.6 μm showed a two-order-of-magnitude increase in SNR and a ~× increase in D* as compared to 2-D arrays of antenna-coupled detectors. |
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RPLAB @ gujma @ |
Serial |
741 |
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Loudkov, D.; Tong, C. Y. E.; Blundell, R.; Kaurova, N.; Grishina, E.; Voronov, B.; Gol'tsman, G. |
| Title |
An investigation of the performance of the superconducting HEB슠mixer as a function of its RF슠embedding impedance |
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Journal Article |
| Year |
2005 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
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| Volume |
15 |
Issue |
2 |
Pages |
472-475 |
| Keywords |
HEB mixer |
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IEEE |
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no |
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371 |
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Datesman, A.M.; Schultz, J.C.; Lichtenberger, A.W.; Golish, D.; Walker, C.K.; Kooi, J. |
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Fabrication and characterization of niobium diffusion-cooled hot-electron bolometers on silicon nitride membranes |
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Journal Article |
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2005 |
Publication |
IEEE Trans. Appl. Supercond. |
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| Volume |
15 |
Issue |
2 |
Pages |
928-931 |
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Edition |
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1051-8223 |
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no |
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439 |
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Koshelets, V.P.; Dmitriev, P.N.; Ermakov, A.B.; Sobolev, A.S.; Torgashin, M.Y.; Kurin, V.V.; Pankratov, A.L.; Mygind, J. |
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Optimization of the phase-locked flux-flow oscillator for the submm integrated receiver |
Type |
Journal Article |
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2005 |
Publication |
IEEE Trans. Appl. Supercond. |
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| Volume |
15 |
Issue |
2 |
Pages |
964-967 |
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SIR |
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1051-8223 |
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no |
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515 |
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