Zigzag laser with reduced optical distortionĪlbrecht, G.F. The analysis includes consideration of the effects of the zig-zag optical path, which eliminates thermal and stress focusing and reduces residual birefringence.

A detailed theoretical description of the thermal, stress, and beam-propagation characteristics of a slab laser is presented. Slab geometry solid-state lasers offer significant performance improvements over conventional rod-geometry lasers.

The pump face, anti-reflection (AR) coated at 809 nm, was 6.8 cm in width and the 8.1 cm opposing side, high-reflection (HR) coated at 809 nm, reflected the unabsorbed pump beam for a second pass through the slab.Įggleston, J. It was pumped through the 2.5 mm direction by seven laser diode array packages, each housing four 6OW diode bars, 1 cm in width. Our slab design employed a 8.1 cm x 2.5 mm x 5 mm slab with opposing Brewster end faces. The collimation of multi-bar pump packages to increase brightness and improve overlap is a direct consequence of designs which seek to maximize performance and efficiency. This paper reports on a rather strong thermal lens produced when diode pump radiation is collimated into a narrow portion of the zig-zag slab. Hopf, D.Ī major advantage that solid state zig-zag slab lasers have over conventional rod-based designs is that a much weaker thermal lens is produced in the slab when side-pumped with Quasi-CW laser diode arrays, particularly if the pump radiation is kept well away from the Brewster-cut ends. Thermal Lens Measurement in Diode-Pumped Nd:YAG Zig-Zag Slab

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