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Cherednichenko, S.; Kroug, M.; Khosropanah, P.; Adam, A.; Merkel, H.; Kolberg, E.; Loudkov, D.; Voronov, B.; Gol'tsman, G.; Richter, H.; Hübers, H. W. |
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Title |
A broadband terahertz heterodyne receiver with an NbN HEB mixer |
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Conference Article |
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2002 |
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Proc. 13th Int. Symp. Space Terahertz Technol. |
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Proc. 13th Int. Symp. Space Terahertz Technol. |
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85-95 |
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NbN HEB mixers |
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We present a broadband and low noise heterodyne receiver for 1.4-1.7 THz designed for the Hershel Space Observatory. A phonon- cooled NbN HEB mixer was integrated with a normal metal double- slot antenna and an elliptical silicon lens. DSB receiver noise temperature Tr was measured from 1 GHz through 8GHz intermediate frequency band with 50 MHz instantaneous bandwidth. At 4.2 K bath temperature and at 1.6 THz LO frequency Tr is 800 K with the receiver noise bandwidth of 5 GHz. While at 2 K bath temperature Tr was as low as 700 K. At 0.6 THz and 1.1 THz a spiral antenna integrated NbN HEB mixer showed the receiver noise temperature 500 K and 800 K, though no antireflection coating was used in this case. Tr of 1100 K was achieved at 2.5 THz while the receiver noise bandwidth was 4 GHz. |
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Cambridge, MA, USA |
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Harward University |
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332 |
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Shytov, A. V.; Levitov, L. S.; Beenakker, C. W. J. |
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Title |
Electromechanical noise in a diffusive conductor |
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Journal Article |
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2002 |
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Phys. Rev. Lett. |
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Phys. Rev. Lett. |
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88 |
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22 |
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Electrons moving in a conductor can transfer momentum to the lattice via collisions with impurities and boundaries, giving rise to a fluctuating mechanical stress tensor. The root-mean-squared momentum transfer per scattering event in a disordered metal (of dimension L greater than the mean free path l and screening length xi) is found to be reduced below the Fermi momentum by a factor of order l/L for shear fluctuations and (xi/L)^2 for pressure fluctuations. The excitation of an elastic bending mode by the shear fluctuations is estimated to fall within current experimental sensitivity for a nanomechanical oscillator. |
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0031-9007 |
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RPLAB @ s @ |
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433 |
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Ediss, G. A.; Koller, D. |
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68.5 to 118 GHz measurements of possible infrared filter materials: black polyethylene, Zitex, and grooved and un-grooved fluorogold and HDPE |
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Miscellaneous |
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2002 |
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ALMA Memo |
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412 |
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446 |
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Norton, P. |
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HgCdTe infrared detectors |
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Journal Article |
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2002 |
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Opto-Electronics Review |
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Opto-Electron. Rev. |
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10 |
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3 |
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159-174 |
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458 |
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Colombelli, R |
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FIR quantum cascade lasers at λ>20 μm and THz emitters at λ=80 μm |
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2002 |
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Phys. E: Low-dimensional Systems and Nanostructures |
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13 |
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2-4 |
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848-853 |
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1386-9477 |
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483 |
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Boreiko, R.T.; Betz, A.L. |
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Far-infrared laser emission from deuterated ammonia |
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Journal Article |
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2002 |
Publication |
Applied Physics B: Lasers and Optics |
Abbreviated Journal |
Applied Physics B: Lasers and Optics |
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75 |
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8 |
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823-826 |
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0946-2171 |
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488 |
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Benford, Dominic J.; Moseley, S. Harvey; Chervenak, Jay A. |
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Mission requirements for ultralow-background, large format bolometer arrays |
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Conference Article |
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2002 |
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Proc. Far-Infrared Submillimeter, & Millimeter Detector Workshop |
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applicationsns |
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Monterey, California |
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490 |
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Author |
Peter H. Siegel |
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Terahertz technology |
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Journal Article |
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2002 |
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IEEE Trans. Microw. Theory Techn. |
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50 |
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3 |
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910-928 |
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THz applications |
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494 |
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Author |
Betzler, Klaus; Physik, Fachbereich |
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Fabry-Perot Interferometer |
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2002 |
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Universität Osnabrück |
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497 |
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Author |
Smolyaninov, I. I.; Zayats, A. V.; Stanishevsky, A.; Davis, C. C. |
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Optical control of photon tunneling through an array of nanometer-scale cylindrical channels |
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Journal Article |
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2002 |
Publication |
Phys. Rev. B |
Abbreviated Journal |
Phys. Rev. B |
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66 |
Issue |
20 |
Pages |
205414_1-205414_5 |
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optical mixing |
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1098-0121 |
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499 |
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