This article is cited in 4 papers

Control of radiation parameters

Peculiarities of spike multimode generation of a superradiant distributed feedback laser

E. R. Kocharovskaya, N. S. Ginzburg, A. S. Sergeev

Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod

Abstract: Using one-dimensional semiclassical Maxwell — Bloch equations with account for the coherent polarisation dynamics, we have studied spike generation regimes of a superradiant distributed feedback laser in the case of inhomogeneous broadening of the spectral line of an active medium. By analysing the dynamic spectra of inversion of the active medium and laser radiation, we have revealed the relationship of individual spikes of radiation and their modulation with specific parts in the spectral line of the active medium and mode beatings. It has been shown that the broadening and shift of the lasing spectrum with respect to the initial electromagnetic Bragg-cavity modes is accompanied by a strong spectral gradient of inversion that is typical of the superradiant regimes.

PACS: 42.50.-p, 42.60.Mi, 42.65.Sf

Received: 25.02.2011
Revised: 23.05.2011

 English version: Quantum Electronics, 2011, 41:8, 722–725

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