Stabilizing effect of line broadening in Raman fiber lasers

Stabilizing effect of line broadening in Raman&nbs

M. Krause, S. Cierullies, H. Renner,
Stabilizing effect of line broadening in Raman fiber lasers
Opt. Commun. 227(4-6), pp. 355-361 (2003)

Abstract: We show phenomenologically that power-dependent Stokes line broadening can stabilize Raman fiber lasers (RFLs) against pump power changes. To this aim we assume, according to experimental observations in the literature, that an increase of the Stokes power in any cavity increases the corresponding spectral linewidth. This reduces the effective reflectivity of the fiber Bragg gratings of the cavity and thus increases the total cavity loss. The latter counteracts the power increase and thus stabilizes the RFL. While single-wavelength RFLs are only slightly affected, the stabilizing effect for multi-wavelength RFLs can be particularly strong.

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