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Far-ir heterodyne radiometric measurements with quasioptical Schottky diode mixers

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.90288· OSTI ID:7051524
We have made heterodyne radiometric measurements with GaAs Schottky diode mixers, mounted in a corner-reflector configuration, over the spectral range 170 ..mu..m to 1 mm. At 400 ..mu..m, system noise temperatures of 9700 K DSB (NEP=1.4 x 10/sup -/19 W/Hz) and mixer noise temperatures of 5900 K have been achieved. This same quasioptical mixer has also been used to generate 10/sup -/7 W of tunable radiation suitable for spectroscopic applications.
Research Organization:
Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, Massachusetts 02173
OSTI ID:
7051524
Journal Information:
Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 33:2; ISSN APPLA
Country of Publication:
United States
Language:
English