Modelling of the erbium-ytterbium laserReport as inadecuate

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1 institut d-optique théorique avancée 2 Thales Research and Technology Palaiseau

Abstract : We have developed a modelisation of the Yb:Er glass laser system for pulsed regime. The model is first validated in CW regime with a good agreement with experimental values. The agreement in Q-switch mode is only qualitative. Nevertheless, tendences are outlined due to the particular dynamical behaviour of a codoped system. Especially, we pointed out the possibility of achieving Q-switch operation with pulse repetition frequency greater than the spontaneous de-excitation rate of the erbium upper level without output laser pulse characteristic degradation. On the other hand, gain-switch operation is not well suited for such codoped systems.

Author: Eric Tanguy - Christian Larat - Jean-Paul Pocholle -



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