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The present work offers a scheme where a simple plano-convex intracavity lens with a strong spherical aberration was used in Yb:YAG laser for the generation of ndf beams. A 9.8% at. Yb:YAG ceramics plane-parallel plate (9x11x1.1 mm) mounted on a copper cooler was end-pumped by a cw fiber-coupled laser diode at room temperature. The pump radiation (power 0.1-1.5 W) was focused into the plate to a circular spot with a bell-shaped intensity profile of ~100 mum halfwidth.