Spacing statistics in two-mode random lasing

Details Spacing statistics in two-mode random lasing Spacing statistics in two-mode random lasing

2007-03-29

arxiv.org/abs/cond-mat/0703783v2

Phys. Rev. A 76, 043842 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages (v2: substantial changes, published version)

Scientific paper

10.1103/PhysRevA.76.043842

The distribution of spacings between the lasing frequencies for an ensemble of random lasers in the two-mode regime was computed. The random lasers are implemented as open chaotic cavities filled with an active medium. The spectral properties of the passive cavities are modeled with non-Hermitian random matrices. The spacing distribution is found to depend on the relation between the gain-profile width and the mean spacing of the passive-cavity modes. The distribution displays mode repulsion and, under certain conditions, agrees with the Wigner surmise. The role of mode competition is discussed.

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