Self-pulsing in Er3+-doped fibre laser |
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Authors: | P. Le Boudec M. Le Flohic P. L. Francois F. Sanchez G. Stephan |
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Affiliation: | (1) France Telecom, CNET/LAB, Route de Tregastel, 22301 Lannion Cedex, France;(2) Laboratoire d'optronique, Equipe associée au CNRS EP0001, ENSSAT, 6, Rue de Kerampont, 22305 Lannion Cedex, France |
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Abstract: | The output intensity of an erbium-doped fibre laser was studied. Experiments were performed with three pumping wavelengths: 514.5 nm, 810 nm and 980 nm. The laser output intensity exhibits three different dynamical behaviours: steady-state, sinusoidal variation or self-pulsing. In particular, in a bad (high-loss) cavity configuration, when the pumping ratio is increased above the lasing threshold the output intensity changes continuously from a steady-state to an infinite train of pulses. We also show that, depending on the cavity configuration, the transient oscillations display different forms. |
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