Abstract
In this article a ray tracing method is used to design a specific hollow-duct whereby we show that it will be the best choice for pumping the gain medium that has inclined sides or cutting edges used for edge-pumped high power disk laser due to several advantages of the shape of this gain medium. This kind of hollow-duct which is called non-symmetric hollow-duct in this paper includes inclined output facet that compresses and homogenizes the emission of laser diode arrays which are coupled to the entrance-inclined surface of the gain medium. In this paper, the goals of designing this kind of hollow-duct are based on two important criteria: First, homogeneity of pump light distribution due to the beam concentration of laser diode bars according to the edge-pumped disk laser. Second, uniform distribution of pump light in non-symmetric hollow-ducts deducing uniform temperature distribution in the gain medium.
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