Abstract
We successfully fabricated 150 mm diameter Ytterbium doped Yttrium Aluminum Garnet (Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>, YAG) transparent ceramics with high optical quality by the solid-state reaction method. In-line transmittance of Yb:YAG ceramics at 1030 nm was found to be equal to that of single crystal Yb:YAG. We confirmed that there is a good correlation between Yb<sup>3+</sup> dopant concentrations (0.35-10.0 at. %) and absorption spectra. We also confirmed that our Yb:YAG transparent ceramics have good uniformity of Yb<sup>3+</sup> concentration and excellent optical properties. Our Yb:YAG transparent ceramics show promise as a laser gain medium for high-power laser applications.
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