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Author Trifonov, V. A.; Karasik, B. S.; Zorin, M. A.; Gol'tsman, G. N.; Gershenzon, E. M.; Lindgren, M.; Danerud, M.; Winkler, D. url  openurl
  Title (up) 9.6 μm wavelength mixing in a patterned YBa2Cu3O7-δ thin film Type Conference Article
  Year 1996 Publication Proc. 7th Int. Symp. Space Terahertz Technol. Abbreviated Journal Proc. 7th Int. Symp. Space Terahertz Technol.  
  Volume Issue Pages 337-348  
  Keywords YBCO HTS HEB mixers  
  Abstract Hot-electron bolometric (HEB) mixing of 9.6 gm infrared radiation from two lasers in high-quality YBa2Cu307_3 (YBCO) patterned thin film has been demonstrated. A heterodyne measurement showed an intermediate frequency (IF) bandwidth of 18 GHz, limited by our measurement system. An intrinsic limit of 100 GHz is predicted. Between 0.1 and 1 GHz intermediate frequency, temperature fluctuations with an equivalent output noise temperature Tfl up to -150 K, contributed to the mixer noise while Johnson noise dominated above 1 GHz. The overall conversion loss at 77 K at low intermediate frequencies was measured to be -25 dB, of which 13 dB was due to the coupling loss. The IIEB mixer is very promising for use in heterodyne receivers within the whole infrared range.  
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  Call Number Serial 1615  
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Author Betz, A. L.; Borejko, R. T. openurl 
  Title (up) A practical Schottky mixer for 5 THz Type Conference Article
  Year 1996 Publication Proc. 7th Int. Symp. Space Terahertz Technol. Abbreviated Journal  
  Volume Issue Pages 503  
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  Notes Approved no  
  Call Number Serial 269  
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Author van de Stadt, H. openurl 
  Title (up) An improved 1 THz waveguide mixer Type Conference Article
  Year 1996 Publication Proc. 7th Int. Symp. Space Terahertz Technol. Abbreviated Journal  
  Volume Issue Pages 536  
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  Publisher Place of Publication Charlottesville, Virginia, USA Editor  
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  Notes Probably other authors exist. Approved no  
  Call Number Serial 263  
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Author Ellison, B. N.; Maddison, B. J.; Matheson, D. N.; Oldfield, M. L.; Marazita, S.; Crowe, T. W.; Maaskant, P.; Kelly, W. M. openurl 
  Title (up) First results for a 2.5 THz Schottky diode waveguide mixer Type Conference Article
  Year 1996 Publication Proc. 7th Int. Symp. Space Terahertz Technol. Abbreviated Journal Proc. 7th Int. Symp. Space Terahertz Technol.  
  Volume Issue Pages 494  
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  Publisher Place of Publication Charlottesville, Virginia, USA Editor  
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  Notes Approved no  
  Call Number Serial 265  
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Author Gerecht, E.; Musante, C. F.; Wang, Z.; Yngvesson, K. S.; Mueller, E. R.; Waldman, J.; Gol'tsman, G. N.; Voronov, B. M.; Cherednichenco, S. I.; Svechnikov, S. I.; Yagoubov, P. A.; Gershenzon, E. M. url  openurl
  Title (up) Optimization of hot eleciron bolometer mixing efficiency in NbN at 119 micrometer wavelength Type Conference Article
  Year 1996 Publication Proc. 7th Int. Symp. Space Terahertz Technol. Abbreviated Journal Proc. 7th Int. Symp. Space Terahertz Technol.  
  Volume Issue Pages 584-600  
  Keywords NbN HEB mixers  
  Abstract We describe an investigation of a NbN HEB mixer for 2.5 THz. An intrinsic conversion loss of 23 dB has been measured with a two-laser measurement technique. The conversion loss was limited by the LO power available and is expected to decrease to 10 dB or less when sufficient LO power is available. For this initial experiment we used a prototype device which is directly coupled to the laser beams. We present results for a back-short technique that improves the optical coupling to the device and describe our progress for an antenna-coupled device with a smaller dimension. Based on our measured data for conversion loss and device output noise level, we predict that NbN HEB mixers will be capable of achieving DSB receiver noise temperatures of ten times the quantum noise limit in the THz range.  
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  Notes Approved no  
  Call Number Serial 1616  
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