| 摘要 |
The inventive module of a light-pumped laser comprises light pump sources, a solid-state active element which is embodied in the form of a plate and provided with a couple of first opposite side faces, the distance therebetween defining the width of the active element for passing a pump radiation therethrough from the pump sources to the active element; a couple of second opposite side faces, the distance therebetween defining the thickness of the active element, which faces are embodied in the plane-parallel manner in order to direct a beam of formed laser radiation in such a way that it enables said beam to pass along the length of the active element in a zigzag manner, undergoing a total internal reflection from the couple of second side faces; a couple of end faces, the distance therebetween defining the length of the active element, and also heat-spreading devices which have a thermal contact with each second face in order to remove heat from the active element. In order to reduce radiation divergence, increase the laser-excitation efficiency and to increase the heat resistance of the active element, said element is embodied in such a way that the width thereof is greater than the thickness thereof. For the purpose of the pump radiation, the first side faces are embodied in a transparent manner. The arrangement of the light pump sources with respect to the active element and the directional diagram thereof are such that at least one greater part of the pump radiation is diffused inside the active element along the width thereof in zigzag manner by means of the total internal reflection from the second side faces.
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