Statistical studies of random lasing modes and amplified spontaneous emission spikes in weakly scattering systems
arXiv:0712.2807 · doi:10.1103/PhysRevA.77.013832
Abstract
We measured the ensemble-averaged spectral correlation functions and statistical distributions of spectral spacing and intensity for lasing modes in weakly scattering systems, and compared them to those of the amplified spontaneous emission spikes. Their dramatic differences illustrated the distinct physical mechanisms. Our numerical simulation revealed that even without reabsorption the number of potential lasing modes might be greatly reduced by local excitation of a weakly scattering system. The lasing modes could be drastically different from the quasimodes of the passive system due to selective amplification of the feedback from the scatterers within the local gain region.
25 pages, 8 figures
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Cited by in corpus (9)
- Experimental evidence of replica symmetry breaking in random lasers
- Recent developments in the theory of multimode random lasers
- Complexity of 2D random laser modes at the transition from weak scattering to Anderson localization
- Numerical Study of Amplified Spontaneous Emission and Lasing in Random Media
- Transition from non-resonant to resonant random lasers by the geometrical confinement of disorder
- Fluctuations and Correlations of Emission from Random Lasers
- Statistical properties of one-dimensional random lasers
- Fluctuations in a diffusive medium with gain
- Coherent random lasing in a disordered array of amplifying microresonators