Nonstationary Regime of Random Lasers

Details Nonstationary Regime of Random Lasers Nonstationary Regime of Random Lasers

2010-11-25

arxiv.org/abs/1011.5902v1

Phys. Rev. A 84, 023826 (2011)

Physics

Optics

10 pages, 5 figures

Scientific paper

10.1103/PhysRevA.84.023826

A numerical study is presented of one-dimensional and two-dimensional random lasers as a function of the pumping rate above the threshold for lasing. Depending on the leakiness of the cavity modes, we observe that the stationary lasing regime becomes unstable above a second threshold. Coherent instabilities are observed as self pulsation of the total output intensity, population inversion, and polarization.

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