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Author
Rasulova, G. K.
;
Pentin, I. V.
;
Goltsman, G. N.
Title
Terahertz emission from a weakly-coupled GaAs/AlGaAs superlattice biased into three different modes of current self-oscillations
Type
Journal Article
Year
2019
Publication
AIP Advances
Abbreviated Journal
AIP Advances
Volume
9
Issue
10
Pages
105220
Keywords
GaAs/AlGaAs superlattice, SL, NbN HEB
Abstract
Radio-frequency modulated terahertz (THz) emission power from weakly-coupled GaAs/AlGaAs superlattice (SL) has been increased by parallel connection of several SL mesas. Each SL mesa is a self-oscillator with its own oscillation frequency and mode. In coupled non-identical SL mesas biased at different voltages within the hysteresis loop the chaotic, quasiperiodic and frequency-locked modes of self-oscillations of current arise. THz emission was detected when three connected in parallel SL mesas were biased into the frequency-locked and quasiperiodic modes of self-oscillations of current, while in the chaotic mode of those it falls to the noise level.
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2158-3226
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no
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1274
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