Abstract
Yb:YAG thin disk is mounted on the surface of the W–Cu heat spreader. The back side of the heat spreader is cooled directly using jet-impingement cooling system. In order to reduce the undesirable effects caused by the increase of temperature in gain medium, numerical analysis of the influence of material type and thickness of heat spreader was performed. The effect of various materials and thickness on temperature distribution, deformation and stress in disk laser is investigated using FEM analysis. Good agreement between the temperature distribution of numerical results and experimental thermography is obtained.
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