Abstract
The interest in diode pumped solid state lasers in the 2 μm region in recent years has been well documented. The need for compact, highly efficient sources has led to the study of new laser hosts which may improve performance. We have grown and analyzed the spectroscopic properties of two Tm3+-doped silicate oxyapatite hosts and one orthosilicate. These hosts are CaY4(SiO4)3O [CaYSOAP], CaLa4(SiO4)3O [CaLaSOAP], and Y2SiO5 [YSO or YOS]. The spectroscopic properties of these new hosts are compared with those of Tm3+:YAG, and indicate that these hosts may offer improvements to Tm3+:YAG in increasing tunability in the 2 μm region and in improving laser performance for the 2.3 μm transition. Preliminary laser results of a Tm:CaYSOAP laser are also presented.
© 1993 Optical Society of America
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