Abstract

Several recent studies1–4 have shown the laser host material gadolinium scandium gallium garnet (GSGG) doped with Nd3+ and sensitized by Cr3+ to be a more efficient laser than the well-known commonly used Nd:YAG. However, all these studies have been performed at relatively low average pump power. To evaluate Nd:Cr:GSGG as a high-average-power laser material, we measured absorption efficiency, heat deposition rate, and thermally induced stress in 4- and 6.3-mm diam GSGG laser rods up to 2-kW pumping levels and compared these values, as well as laser output powers, to the results of similar experiments in Nd:YAG.

© 1986 Optical Society of America

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References

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