Resonant excitation of acoustic waves in one-dimensional exciton-polariton systems
A. V. Yulin, V. K. Kozin, A. V. Nalitov, I. A. Shelykh
TL;DR
This paper investigates how exciton-polariton condensates in a one-dimensional microcavity can generate coherent acoustic waves through parametric instability, influenced by exciton interactions causing bistability and hysteresis.
Contribution
It introduces a detailed analysis of acoustic wave generation in exciton-polariton systems considering exciton interactions and nonlinear effects.
Findings
Threshold-dependent generation of coherent acoustic waves
Observation of polariton harmonic generation
Bistability and hysteresis effects in the system
Abstract
We analyze the interaction of exciton-polariton condensates in a one-dimensional semiconductor microcavity with acoustic phonons. We consider the case of a coherently pumped condensate and demonstrate that upon passing of a certain threshold the parametric instability in the system leads to the generation of a coherent acoustic wave and additional polariton harmonics. The process is strongly affected by exciton-exciton interactions which lead to the appearance of the effects of the bistability and hysteresis in the system.
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