Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2011-04-14
EPL, 96 (2011) 34005
Physics
Condensed Matter
Disordered Systems and Neural Networks
6 pages, 4 figures
Scientific paper
10.1209/0295-5075/96/34005
We develop an ab initio analytic theory of random lasing in an ensemble of atoms that both scatter and amplify light. The theory applies all the way from low to high density of atoms. The properties of the random laser are controlled by an Euclidean matrix with elements equal to the Green's function of the Helmholtz equation between pairs of atoms in the system. Lasing threshold and the intensity of laser emission are calculated in the semiclassical approximation. The results are compared to the outcome of the diffusion theory of random lasing.
Goetschy Arthur
Skipetrov Sergey E.
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