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Author Wild, W.; de Graauw, Th.; Baryshev, A.; Bos, A.; Gao, J. R.; Gunst, A.; Helmich, F.; ter Horst, R.; Jackson, B.; Maat, P.; Noordam, J.; Roelfsema, P.; Venema, L.; Whyborn, N.; Yagoubov, P. openurl 
  Title Terahertz technology for ESPRIT – a far-infrared space interferometer Type Conference Article
  Year 2005 Publication Proc. 16th Int. Symp. Space Terahertz Technol. Abbreviated Journal (up)  
  Volume Issue Pages  
  Keywords  
  Abstract  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Göteborg, Sweden Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number RPLAB @ s @ ESPRIT_interferom_Wild Serial 365  
Permanent link to this record
 
 
Author Hajenius, M.; Baselmans, J. J. A.; Baryshev, A.; Gao, J. R.; Klapwijk, T. M.; Kooi, J. W.; Jellema, W.; Yang, Z. Q. url  doi
openurl 
  Title Full characterization and analysis of a terahertz heterodyne receiver based on a NbN hot electron bolometer Type Journal Article
  Year 2006 Publication J. Appl. Phys. Abbreviated Journal (up)  
  Volume 100 Issue 7 Pages 074507  
  Keywords HEB  
  Abstract  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0021-8979 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number RPLAB @ s @ Serial 385  
Permanent link to this record
 
 
Author Jackson, B. D.; Baryshev, A. M.; de Lange, G.; Gao, J. R.; Shitov, S. V.; Iosad, N. N.; Klapwijk, T. M. openurl 
  Title Low-noise 1 THz superconductor-insulator-superconductor mixer incorporating a NbTiN/SiO2/Al tuning circuit Type Journal Article
  Year 2001 Publication Appl. Phys. Lett. Abbreviated Journal (up)  
  Volume 79 Issue 3 Pages 436  
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  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
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  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number RPLAB @ s @ sis_Jackson_2001 Serial 314  
Permanent link to this record
 
 
Author Kooi, J. W.; Baselmans, J. J. A.; Hajenius, M.; Gao, J. R.; Klapwijk, T. M.; Dieleman, P.; Baryshev, A.; de Lange, G. url  doi
openurl 
  Title IF impedance and mixer gain of NbN hot electron bolometers Type Journal Article
  Year 2007 Publication J. Appl. Phys. Abbreviated Journal (up)  
  Volume 101 Issue 4 Pages 044511  
  Keywords  
  Abstract  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0021-8979 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number RPLAB @ s @ Serial 445  
Permanent link to this record
 
 
Author Gao, J. R.; Hajenius, M.; Yang, Z. Q.; Baselmans, J. J. A.; Khosropanah, P.; Barends, R.; Klapwijk, T. M. url  doi
openurl 
  Title Terahertz superconducting hot electron bolometer heterodyne receivers Type Journal Article
  Year 2007 Publication IEEE Trans. Appl. Supercond. Abbreviated Journal (up)  
  Volume 17 Issue 2 Pages 252-258  
  Keywords HEB, mixer, direct detection effect  
  Abstract We highlight the progress on NbN hot electron bolometer (HEB) mixers achieved through fruitful collaboration between SRON Netherlands Institute for Space Research and Delft University of Technology, the Netherlands. This includes the best receiver noise temperatures of 700 K at 1.63 THz using a twin-slot antenna mixer and 1050 K at 2.84 THz using a spiral antenna coupled HEB mixer. The mixers are based on thin NbN films on Si and fabricated with a new contact-process and-structure. By reducing their areas HEB mixers have shown an LO power requirement as low as 30 nW. Those small HEB mixers have demonstrated equivalent sensitivity as those with large areas provided the direct detection effect due to broadband radiation is removed. To manifest that a HEB based heterodyne receiver can in practice be used at arbitrary frequencies above 2 THz, we demonstrate a 2.8 THz receiver using a THz quantum cascade laser (QCL) as local oscillator.  
  Address  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1051-8223 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number RPLAB @ asmirn @ Serial 557  
Permanent link to this record
 
 
Author Zhang, W.; Miao, W.; Zhong, J. Q.; Shi, S. C.; Hayton, D. J.; Vercruyssen, N.; Gao, J. R.; Goltsman, G. N. openurl 
  Title Temperature dependence of superconducting hot electron bolometers Type Conference Article
  Year 2013 Publication Not published results: 24th international symposium on space terahertz technology Abbreviated Journal (up)  
  Volume Issue Pages  
  Keywords HEB  
  Abstract  
  Address Groningen,The Netherlands  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
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  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Serial 1067  
Permanent link to this record
 
 
Author 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. doi  openurl
  Title Direct detection effect in small volume hot electron bolometer mixers Type Journal Article
  Year 2005 Publication Appl. Phys. Lett. Abbreviated Journal (up) 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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  Area Expedition Conference  
  Notes Approved no  
  Call Number Serial 377  
Permanent link to this record
 
 
Author Khosropanah, P.; Gao, J. R.; Laauwen, W. M.; Hajenius, M; Klapwijk, T. M. openurl 
  Title Low noise NbN hot electron bolometer mixer at 4.3 THz Type Journal Article
  Year 2007 Publication Appl. Phys. Lett. Abbreviated Journal (up) Appl. Phys. Lett.  
  Volume 91 Issue Pages 221111 (1 to 3)  
  Keywords NbN HEB mixers, NbN, contacts cleaning  
  Abstract We have studied the sensitivity of a superconducting NbN hot electron bolometer mixer integrated with a spiral antenna at 4.3 THz. Using hot/cold blackbody loads and a beam splitter all in vacuum, we measured a double sideband receiver noise temperature of 1300 K at the optimum local oscillator (LO) power of 330 nW, which is about 12 times the quantum noise (hnu/2kB). Our result indicates that there is no sign of degradation of the mixing process at the superterahertz frequencies. Moreover, a measurement method is introduced which allows us for an accurate determination of the sensitivity despite LO power fluctuations.  
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  Series Editor Series Title Abbreviated Series Title  
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  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Serial 584  
Permanent link to this record
 
 
Author Ganzevles, W. F. M.; Gao, J. R.; de Korte, P. A. J.; Klapwijk, T. M. url  doi
openurl 
  Title Direct response of microstrip line coupled Nb THz hot-electron bolometer mixers Type Journal Article
  Year 2001 Publication Applied Physics Letters Abbreviated Journal (up) Appl. Phys. Lett.  
  Volume 79 Issue 15 Pages 2483-2485  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0003-6951 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Serial 311  
Permanent link to this record
 
 
Author Baselmans, J. J. A.; Hajenius, M.; Gao, J. R.; Klapwijk, T. M.; de Korte, P. A. J.; Voronov, B.; Gol'tsman, G. doi  openurl
  Title Doubling of sensitivity and bandwidth in phonon cooled hot electron bolometer mixers Type Journal Article
  Year 2004 Publication Appl. Phys. Lett. Abbreviated Journal (up) Appl. Phys. Lett.  
  Volume 84 Issue 11 Pages 1958-1960  
  Keywords NbN HEB mixers  
  Abstract We demonstrate that the performance of NbN lattice cooled hot electron bolometer mixers depends strongly on the interface quality between the bolometer and the contact structure. We show experimentally that both the receiver noise temperature and the gain bandwidth can be improved by more than a factor of 2 by cleaning the interface and adding an additional superconducting interlayer to the contact pad. Using this we obtain a double sideband receiver noise temperature TN,DSB=950 K

at 2.5 THz and 4.3 K, uncorrected for losses in the optics. At the same bias point, we obtain an IF gain bandwidth of 6 GHz.		  
  Address  
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  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
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  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Serial 352  
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