PT Journal
AU Rasulova, GK
   Pentin, IV
   Goltsman, GN
TI Terahertz emission from a weakly-coupled GaAs/AlGaAs superlattice biased into three different modes of current self-oscillations
SO AIP Advances
JI AIP Advances
PY 2019
BP 105220
VL 9
IS 10
DI 10.1063/1.5116014
DE GaAs/AlGaAs superlattice; SL; NbN HEB
AB 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.
ER