Advanced far-infrared detectors
نویسندگان
چکیده
منابع مشابه
Ultrasensitive graphene far-infrared power detectors.
We describe the properties of ultrasensitive graphene photon detectors for use in the far-infrared/terahertz spectral region and present theoretical predictions for their power detection sensitivity. These predictions are based on two graphene contacting schemes with superconducting contacts: contacts with a thin insulating barrier, and direct superconducting contacts. To quantitatively assess ...
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The recent development of p-GaAs homojunction interfacial workfunction internal photoemission (HIWIP) far-infrared (\40 mm) detectors is briefly reviewed. The emphasis is on the detector performance, which includes responsivity, quantum efficiency, bias effects, cut-off wavelength, uniformity, noise, and negative capacitance characteristics. Promising results indicate that p-GaAs HIWIP detector...
متن کاملK far - infrared hot - electron multi - quantum - well detectors
The responsivity to long wavelength ~513 and 1253 mm! far-infrared ~FIR! radiation and the root mean square noise voltage has been measured for one bulk GaAs and two GaAs/AlGaAs multiquantum-well ~MQW! hot-electron photodetectors as a function of temperature from 4.49 to 77 K. From these data the noise-equivalent power ~NEP! was determined for each device over the same temperature range. The MQ...
متن کاملProperties of Josephson Point-contact Far-infrared Detectors
The far-infrared (FIR) properties of niobium cat-whisker point contacts were studied using radiation from an optically pumped FIR laser. The reproducible behaviour of junctions with excellent high-frequency performance allowed a measurement of the FIR frequency dependence of the strength of the a.c. Josephson effect. The shape of the laser-induced steps was used to measure the effective noise t...
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ژورنال
عنوان ژورنال: Infrared Physics & Technology
سال: 1994
ISSN: 1350-4495
DOI: 10.1016/1350-4495(94)90074-4