Dynamics of a green upconversion-pumped Er:YAG laser exhibiting reabsorption losses

O. Toma; Serban Georgescu

doi:10.1117/12.563132

21 June 2004 Dynamics of a green upconversion-pumped Er:YAG laser exhibiting reabsorption losses

O. Toma, Serban Georgescu

Proceedings Volume 5449, Eighth International Conference on Laser and Laser Information Technologies; (2004) https://doi.org/10.1117/12.563132
Event: Eighth International Conference on Laser and Laser Information Technologies, 2003, Smolyan, Bulgaria

Abstract

In this paper we model the dynamical behavior of a green-emitting upconversion-pumped Er(0.5 at.%):YAG laser, using the rate equations. An important peculiarity of this laser is the reabsorption of laser radiation by the parasitic ⁴I_13/2→²H2_9/2excited-state absorption process. This process represents a supplementary intensity-dependent loss mechanism that can, in certain conditions, produce self-pulsing behavior of the Er:YAG laser. Stability analysis is used to identify the various regimes of laser emission and the bifurcations leading to them. The results are illustrated by Runge-Kutta integration of the rate equations for values of control parameters corresponding to various laser emission regimes. The model can be applied for the prediction and enhancement of the performances of the green Er³⁺upconversion lasers.

Citation Download Citation

O. Toma and Serban Georgescu "Dynamics of a green upconversion-pumped Er:YAG laser exhibiting reabsorption losses", Proc. SPIE 5449, Eighth International Conference on Laser and Laser Information Technologies, (21 June 2004); https://doi.org/10.1117/12.563132

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