Published on behalf of Chinese Laser Press / Shanghai Institute of Optics and Fine Mechanics
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Recent progress on rare-earth doped polycrystalline YAG transparent ceramics has made them an alternative novel solid-state laser gain material. In this paper we present results of our research on polycrystalline RE:YAG transparent ceramics. High optical quality YAG ceramics doped with various rare-earth (RE) ions such as 
${\rm Nd}^{3+}$, 
${\rm Yb}^{3+}$, 
${\rm Er}^{3+}$, 
${\rm Tm}^{3+}$, and 
${\rm Ho}^{3+}$ have been successfully fabricated using the solid-state reactive sintering method. Highly efficient laser oscillations of the fabricated ceramics are demonstrated.