Abstract

We have successfully grown new laser crystals with a disordered type structure, calcium niobium gallium garnet (CNGG), by the Czochralski technique. Undoped, Nd and, Tm and Ho doped CNGG single crystals about 25 mm in diameter and 70 mm in length were grown using Pt and Ir crucibles. The doped CNGG single crystals were found to have broad absorption spectra which are attractive for laser diode pumped lasers. The growth conditions, crystal quality and spectroscopic properties of the CNGG for laser applications are reported.

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