New sensitive microwave bolometer heterodyne receiver

Journal Article · Mon Oct 15 04:00:00 EDT 1979 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.91235· OSTI ID:6047589

Nimtz, G; Schlicht, B; Lehmann, H; Tyssen, E

Some narrow-gap mixed crystal semiconductors show a magnetic field induced transport anomaly at low temperatures. The anomaly is accompanied by a transition from a low to a high resistivity state, which in turn causes a strongly nonlinear I-V characteristic. We have investigated microwave mixing near such a phase transition in n-type Hg/sub 0.8/Cd/sub 0.2/Te with a frequency of 37 GHz at 1.5 K and in magnetic fields up to 8.5 T. The sensitivity characteristic was measured and the responsivity determined to be about 15 times higher than that of a hot-carrier InSb bolometer. The time resolution of this new bolometer (=10/sup -7/ s) was slightly better than in InSb.

• Research Organization: II. Physikalisches Institut der Universitaet zu Koeln/Germany
• OSTI ID: 6047589
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 35:8; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
BOLOMETERS
COMPARATIVE EVALUATIONS
CRYSTALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
ENERGY GAP
HETERODYNE RECEIVERS
MAGNETIC FIELDS
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
MICROWAVE RADIATION
N-TYPE CONDUCTORS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RADIATIONS
RADIO EQUIPMENT
RESOLUTION
SEMICONDUCTOR MATERIALS
SENSITIVITY
TIME RESOLUTION
TIMING PROPERTIES