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Edge multi-facet pumping configuration for thin gain lasers

Optics & Laser Technology, ISSN: 0030-3992, Vol: 44, Issue: 5, Page: 1307-1311
2012
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In this article an edge-facet and multi aperture pumped thin gain laser with highly efficient and simple pump optics is reported. The crystal configuration is a symmetrical hexagonal Composite Yb:YAG/YAG with slanted sides. Three diodes are placed outside the hexagonal shape disk, and the emitting light is coupled via three lens ducts through its three slanted edges and propagates through the disk along the zigzag path and repeatedly passes the gain medium, thus pump uniformity and absorption efficiency are improved. A comprehensive numerical model is utilized in the laser designing process. 192 W output power with good beam quality was achieved from this laser configuration.

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