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HL: Fachverband Halbleiterphysik

HL 44: Photonic crystals

HL 44.1: Vortrag

Dienstag, 12. März 2013, 15:00–15:15, H3

Random Laser Theory - Coherence and Co-Existenze of Random Lasing Modes and Threshold Behavior — •Regine Frank — Instutut für Theoretische Physik, Universität Tübingen

In any quantum or wave system dissipation leads to decoherence. We demonstrate that the loss dynamics of random lasers imply a finite lasing mode volume, which explains the co-existence of random lasing modes. The coherence properties of the laser are dependent to the systems inherent parameters like scatterers' sizes and filling fraction. The modal behavior and the thresholds are derived 'ab initio' by considering quantum field theoretical scattering and transport in disordered granular systems.