Growth and spectroscopy of (Ho,Yb):KLu(WO4)2 crystals

We report the crystal growth and optical spectroscopy of co-doped monoclinic (Ho,Y b):KLu(WO4)2 single crystals. Macrodefect free single crystals with different co-doping ratios were grown by using Top Seeded Solution Growth -Slow Cooling method (TSSG —SC). The spectroscopic characterization at room temperature of this material in terms of polarized optical absorption and photoluminescence was performed showing that this compound is a potential solid state laser material for the generation of 2 μm laser emission.