An Interdisciplinary Journal

2010, Vol.13, No.4, pp.368-380

Influence of Spatial Inhomogeneity of Pump Energy Distribution on Output Characteristics of Yb:Er Laser with End Pump.
L. I. Burov, G. G. Krylov, and L. G. Krylova

Averaged over an active medium (point) and spatially distributed models of Yb:Er laser with essentially spatial nonuniform energy distribution of pump are considered in detail numerically. It is shown that the point model cannot provide correct laser output characteristics. The distributed model presented allows to find the limit of applicability of the point model and proposes a way of the system parameters optimization to maximize lasing efficiency.
Key words: Yb:Er laser, end pump scheme, spatially distributed model, quasi-steady state approximation, fast variables' adiabatic elimination

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