Abstract

We have studied the high-frequency (HF) impedance of a semiconductor superlattice coupled to an external electrodynamic system, which is a promising element of devices for terahertz (THz) and sub-THz frequency ranges. A characteristic behavior of the impedance under the action of an external harmonic HF signal in the region of synchronization at the fundamental and high-order resonance frequencies of the domain transport system is determined. It is shown that the diagnostics of synchronous regimes in a semiconductor superlattice in an external resonator can be based on analysis of the dynamics of amplitude and phase of the HF impedance.

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