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Article dans une revue

L’instabilité Brillouin dans les lasers à fibre dopée de puissance.

Abstract :

With the emergence of rare-earth doped fibers, and especially double-clad fibers, there is a renewed interest in Brillouin effect. First of all, the amplification of a continuous signal in a rare-earth doped fiber amplifier can generate high enough intensities to excite Brillouin effect and then to create a backscattered stokes wave. Such back-reflection is detrimental for amplifier applications and consequently it has been studied theoretically and experimentally. Recently, the low frequency self-pulsing instability resulting from Brillouin backscattering has been theoretically modelled [1]. Our main objective is to present a general model allowing to explain the origin of the dynamic instability arising in a fiber lasers as a consequence of Brillouin effect. The effect of Brillouin back scattering is theoretically analysed by two-coupled modes laser model. We consider the Fabry-Perot fiber laser cavity. The rich and complex dynamic behaviours are observed. In particular the quasi periodic dynamic is identified and studied.

Type de document :
Article dans une revue
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https://hal.univ-angers.fr/hal-03204238
Contributeur : Okina Université d'Angers <>
Soumis le : mercredi 21 avril 2021 - 14:06:13
Dernière modification le : jeudi 6 mai 2021 - 03:29:54

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  • HAL Id : hal-03204238, version 1
  • OKINA : ua6443

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Djouher Mallek, Abdelhamid Kellou, Hervé Leblond, François Sanchez. L’instabilité Brillouin dans les lasers à fibre dopée de puissance.. Journal of Fundamental and Applied Sciences = Revue des sciences fondamentales et appliquées, Centre universitaire d'El-Oued, 2012, 4, pp.39-44. ⟨hal-03204238⟩

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