Transverse optical instability patterns in semiconductor microcavities: polariton scattering and low-intensity all-optical switching

Abstract

We present a detailed theoretical study of transverse exciton-polariton patterns in semiconductor quantum-well microcavities. These patterns are initiated by directional instabilities in the uniform pump-generated polariton field and are measured as optical patterns in a transverse plane in the far field. Based on a microscopic many-particle theory, we investigate the spatio-temporal dynamics of the formation, selection, and optical control of these patterns. An emphasis is placed on a previously proposed low-intensity, all-optical switching scheme designed to exploit these instability-driven patterns. Simulations and detailed analyses of simplified and more physically transparent models are used. Two aspects are studied in detail. First we study the dependencies of the stability behaviors of various patterns, as well as transition time scales, on parameters relevant to the switching action(the degree of built-in azimuthal anisotropy in the system and the switching beam intensity). It is found that if the parameters are varied, the pattern system undergoes abrupt transitions at threshold parameter values which are accompanied by multiple-stability and hysteresis behaviors. Moreover, during a real-time switching action, the transient dynamics of the system may depend significantly on the proximity of unstable patterns. The second aspect is a classification and detailed analysis of the polariton scattering processes contributing to the pattern dynamics, giving us an understanding of the selection and control of patterns as results of these processes' intricate interplay. The crucial role played by the relative phases of the polariton field in determining the gains or losses of polariton densities in various momentum modes is highlighted, and interpretation of the actions of the various processes in terms of concepts commonly used in classical pattern-forming systems is given.

56 pages (preprint), 19 figures

References in corpus (5)

• All-optical switching in rubidium vapor
• Transverse Patterns in Nonlinear Optical Resonators
• Thermodynamics and Excitations of Condensed Polaritons in Disordered Microcavities
• Influence of exciton-exciton correlations on the polarization characteristics of the polariton amplification in semiconductor microcavities
• Observation of long-lived polariton states in semiconductor microcavities across the parametric threshold

Cited by in corpus (11)

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• All-optical flow control of a polariton condensate using non-resonant excitation
• Vortex multistability and Bessel vortices in polariton condensates
• Polarization dependence of nonlinear wave mixing of spinor polaritons in semiconductor microcavities
• Directional optical switching and transistor functionality using optical parametric oscillation in a spinor polariton fluid
• Coherent Contributions to Population Dynamics in a Semiconductor Microcavity
• Intrinsic bistability and dual-core dark solitons and vortices in exciton polariton condensates
• Spontaneous patterns in coherently driven polariton microcavities
• Coupled spatial multi-mode solitons in microcavity wires
• Externally Controlled Lotka-Volterra Dynamics in a Linearly Polarized Polariton Fluid