Coherent Transport and Symmetry Breaking - Laser Dynamics of Constrained Granular Matter

Abstract

We present diagrammatic transport theory including self-consistent nonlinear enhancement and dissipation in the multiple scattering regime. Our model of Vollhardt-Wölfle transport of photons is fit-parameter-free and raises the claim that the results hold up to the closest packed volume of randomly arranged ZnO Mie scatterers. We find that a symmetry breaking caused by dissipative effects of a lossy underlying substrate leads to qualitatively different physics of coherence and lasing in granular amplifying media. According to our results, confined and extended mode and their laser thresholds can be clearly attributed to unbroken and broken spatial symmetry. The diameters and emission profiles of random laser modes, as well as their thresholds and the positional-dependent degree of coherence can be checked experimentally.

New Journal of Physics (accepted 2014)

References in corpus (8)

• Strong Interactions in Multimode Random Lasers
• Supporting Online Material for "Strong Interactions in Multimode Random Lasers"
• The mode-locking transition of random lasers
• Position-dependent diffusion of light in disordered waveguides
• Suppression of Interactions in Multimode Random Lasers in the Anderson Localized Regime
• Numerical Study of Amplified Spontaneous Emission and Lasing in Random Media
• Tunable degree of localization in random lasers with controlled interaction
• Inelastic scattering puts in question recent claims of Anderson localization of light

Cited by in corpus (4)

• Quantum Many-Body Theory for Exciton-Polaritons in Semiconductor Mie Resonators in the Non-Equilibrium
• Self-Consistent Quantum-Field Theory for the Characterization of Complex Random Media by Short Laser Pulses
• A Self-Consistent Quantum Field Theory for Random Lasing
• Tuning the Quantum Efficiency of Random Lasers - Intrinsic Stokes-Shift and Gain