| Records |
| Author |
Hesler, J. L.; Hall, W. R.; Crowe, T. W.; Weikle, R. M.; Bradley, R. F.; Pan, Shing-Kuo |
| Title |
Submm wavelenght waveguide mixers using planar Schottky barier diods |
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Conference Article |
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1996 |
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Proc. 7th Int. Symp. Space Terahertz Technol. |
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462 |
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270 |
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Kerr, A. R.; Feldman, M. J.; Pan, S.-K. |
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Receiver noise temperature, the quantum noise limit, and zero–point fluctuations |
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Conference Article |
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1997 |
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Proc. 8th Int. Symp. Space Terahertz Technol. |
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101-111 |
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277 |
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Delsim-Yashemi, H.; Fröhlich, L.; Grimm, O. |
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Detector response and beam line transmission measurements with far-infrared radiation |
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Conference Article |
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2005 |
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Proc. 27th International free electron laser conference |
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106-109 |
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Stanford, California |
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448 |
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Hansen, Lene; Jørgensen, H.E.; Nørgaard-Nielsen, Hans Ulrik; Pedersen, Kenneth; Goudfrooij, P.; Linden-Vornle, M.J.D. |
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ISO far-infrared observations of rich galaxy clusters III. Abell 2029, Abell 2052, Abell 2142 |
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Journal Article |
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2000 |
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Astron. Astrophys. |
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A&A |
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362 |
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1 |
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133-137 |
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A sample of five rich galaxy clusters has been mapped by ISO at 60 μm, 100 μm, 135 μm, and 200 μm using the PHT-C camera. In previous papers Abell 2670 and Sersic 159-03 were discussed. Here we present the results for Abell 2029, Abell 2052, and Abell 2142. The conclusion of the survey is that the relatively small fields (approximate to 60 square are minutes) are structured with filaments or superpositions of point sources. In some cases point sources (approximate to 0.1 Jy) can be identified with cluster galaxies. An attempt to demonstrate infrared emission from dust in the cooling flows (due to star formation) was inconclusive. |
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RPLAB @ s @ |
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456 |
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Palermo, C.; Varani, L.; Vaissière, J.-C.; Millithaler, J.-F.; Starikov, E.; Shiktorov, P.; Gruzinskis, V.; Azaïs, B. |
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Monte Carlo calculation of diffusion coefficient, noise spectral density and noise temperature in HgCdTe |
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Conference Article |
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2005 |
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Proc. AIP Conf. |
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780 |
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151-154 |
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460 |
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Karpowicz, Nicholas; Lu, Xiaofei; Zhang, X.-C. |
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Terahertz gas photonics |
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Journal Article |
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2009 |
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J. Modern Opt. |
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56 |
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10 |
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1137-1150 |
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The underlying physics of the generation and detection of terahertz (THz) waves in gases are described. The THz wave generation process takes place in two steps: asymmetric gas ionization by two-frequency laser fields, followed by interaction of the ionized electron wave packets with the surrounding medium, producing an intense ‘echo' with tunable spectral content. In order to clarify the physical picture at the moment of ionization, the laser–atom interaction is treated through solution of the time-dependent Schrödinger equation, yielding an ab initio understanding of the release of the electron wave packets. The second step, where the electrons interact with the surrounding plasma is treated analytically. The resulting pressure dependence of the THz radiation is explored in detail. The THz wave detection process is shown to be the result of four-wave mixing, leading to analytical expressions of the signal obtained which allow for improved optimization of systems that exploit these effects. |
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RPLAB @ gujma @ |
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670 |
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ГОСТ 2.125-2008 ЕСКД Правила выполнения эскизных конструкторских документов |
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2008 |
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RPLAB @ kostochkin @ |
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934 |
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| Author |
Kerr, A. R.; Feldman, M. J.; Pan, S.-K. |
| Title |
Receiver noise temperature, the quantum noise limit, and the role of the zero-point fluctuations |
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Journal Article |
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1996 |
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Electronics division internal report NO. 304 |
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1-10 |
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RPLAB @ atomics90 @ |
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947 |
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Meledin D.; Desmaris V.; Ferm S.-E.; Fredrixon M.; Henke D.; Lapkin I.; Nyström O.; Pantaleev M.; Pavolotsky A.; Strandberg M.; Sundin E.; Belitsky V. |
| Title |
APEX Band T2: A 1.25 – 1.39 THz Waveguide Balanced HEB Receiver |
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Journal Article |
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2008 |
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181-185 |
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A waveguide 1.25–1.39 THz Hot Electron Bolometer (HEB) balanced receiver was successfully developed, characterized and installed at the Atacama Pathfinder EXperiment (APEX) telescope. The receiver employs a quadrature balanced scheme using a waveguide 90-degree 3 dB RF hybrid, HEB mixers and a 180-degree IF hybrid. The HEB mixers are based on ultrathin NbN film deposited on crystalline quartz with a MgO buffer layer. Integrated into the multi-channel APEX facility receiver (SHeFI), the results presented here demonstrate exceptional performance; a receiver noise temperature of 1000 K measured at the telescope at the center of the receiver IF band 2-4 GHz, and at an LO frequency of 1294 GHz. Stability of the receiver is fully in line with the SIS mixer bands of the SHeFI, and gives a spectroscopic Allan time of more than 200 s with a noise bandwidth of 1 MHz. |
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RPLAB @ atomics90 @ |
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974 |
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Gershenzon, E. M.; Il'in, V. A.; Litvak-Gorskaya, L. B.; Filonovich, S. R. |
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Character of submillimeter photoconductivity in n-lnSb |
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Journal Article |
| Year |
1979 |
Publication |
Sov. Phys. JETP |
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Sov. Phys. JETP |
| Volume |
49 |
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1 |
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121-128 |
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A comprehensive investigation was made of the submillimeter photoconductivity of n -1nSb in the range of wavelengths L = 0.6-8 mm, magnetic fields H = 0-30 kOe, electric fields E = 0.01-0.5 V/cm, and temperatures T = 1.3-30 K. The kinetics of the photoconductivity processes as a function of T, E; and H is investigated. It is shown that impurity photoconductivity does exist for any degree of compensation of extremely purified n-InSb. Particular attention is paid to the hopping photoconductivity realized in strongly compensated n-1nSb (K > 0.8). |
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RPLAB @ phisix @ |
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985 |
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