Crystal growth and spectroscopic properties of Yb:CaYAlO4 single crystal

Abstract A Yb 3+ -doped CaYAlO 4 laser crystal has been grown by the Czochralski technique. The segregation coefficient was measured by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The cell parameters were analyzed with X-ray diffraction experiments. Color defects in Yb:CaYAlO 4 have been evidenced to be similar to those in undoped CaYAlO 4 . The polarized absorption spectra and the fluorescence spectrum of the Yb:CaYAlO 4 crystal were measured at room temperature. The fluorescence decay time of the Yb 3+ ion was investigated. The results show that Yb:CaYAlO 4 has potential as a laser gain medium for an ultrashort laser system.

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