Relaxation Oscillations in the Formation of a Polariton Condensate
arXiv:1404.2057 · doi:10.1103/PhysRevLett.112.113602
Abstract
We report observation of oscillations in the dynamics of a microcavity polariton condensate formed under pulsed non resonant excitation. While oscillations in a condensate have always been attributed to Josephson mechanisms due to a chemical potential unbalance, here we show that under some localisation conditions of the condensate, they may arise from relaxation oscillations, a pervasive classical dynamics that repeatedly provokes the sudden decay of a reservoir, shutting off relaxation as the reservoir is replenished. Using non-resonant excitation, it is thus possible to obtain condensate injection pulses with a record frequency of 0:1 THz.
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Cited by in corpus (6)
- All-optical flow control of a polariton condensate using non-resonant excitation
- Nontrivial relaxation dynamics of excitons in high-quality InGaAs/GaAs quantum wells
- Nonlinear spectroscopy of exciton-polaritons in a GaAs-based microcavity
- Relaxation Oscillations of an Exciton-polariton Condensate Driven by Parametric Scattering
- Exciton-Polariton Oscillations in Real Space
- Effective attractive polariton-polariton interaction mediated by the exciton reservoir