Title :
Imaging system for submillimeter wave range based on AlGaAs/GaAs hot electron bolometer mixers
Author :
Maslennikov, S.N. ; Morozov, D.V. ; Ozhegov, R.V. ; Smirnov, K.V. ; Okunev, O.V. ; Tsman, G. N Gol
Author_Institution :
Phys. Dept., Moscow State Pedagogical Univ., Russia
Abstract :
Electromagnetic radiation of the submillimeter (SMM) range is dispersed and absorbed significantly less than infrared (IR) radiation when passing through different objects. That is the reason for the development of an SMM imaging system. In this paper, we discuss the design of an SMM heterodyne imager, based on a matrix of AlGaAs/GaAs heterostructure hot electron bolometer mixers (HEB) with relatively high (about 77 K) operating temperature. The predicted double side band (DSB) noise temperature is about 1000 K and optimal local oscillator (LO) power is about 1 μW for such mixers, which seems to be quite prospective for an SMM heterodyne imager.
Keywords :
bolometers; heterodyne detection; hot carriers; submillimetre wave imaging; submillimetre wave mixers; 1 muW; 1000 K; 77 K; AlGaAs-GaAs; HEB mixers; SMM heterodyne imager; double side band noise temperature; heterostructure hot electron bolometer mixers; optimal local oscillator power; submillimeter wave range imaging system; Bolometers; Electromagnetic radiation; Electromagnetic wave absorption; Electrons; Feeds; Gallium arsenide; Ocean temperature; Optical imaging; Submillimeter wave devices; Transmission line matrix methods;
Conference_Titel :
Physics and Engineering of Microwaves, Millimeter, and Submillimeter Waves, 2004. MSMW 04. The Fifth International Kharkov Symposium on
Print_ISBN :
0-7803-8411-3
DOI :
10.1109/MSMW.2004.1346010
