Journal of Crystal Growth, Vol.445, 101-107, 2016
Ca10Li(VO4)(7):Nd3+, a promising laser material: growth, structure and spectral characteristics of a Czochralski-grown single crystal
Pure and Nd-doped Ca10Li(VO4)(7) single crystals were grown by the Czochralski method. The structure of Ca10Li(VO4)(7) single crystal was refined starting from a model of Ca10K(VO4)(7) using the powder diffraction data collected at a laboratory high-resolution diffractometer. The defect structure of the single crystal was studied with the use of both, high-resolution diffraction using a laboratory instrument and X-ray topographic techniques employing synchrotron radiation at the Hasylab laboratory (Hamburg). Polarized absorption and luminescence spectra of Nd-doped Ca10Li(VO4)(7) crystal were investigated in details. The laser oscillation was obtained under flash lamp pumping and the slope efficiency of 0.87% was achieved in the free-running mode. Preliminary examination of lasing properties points that Ca10Li(VO4)(7):Nd crystal can be a highly efficient solid state laser medium. Crystals of this kind are expected to be suitable for application as efficient non-linear optics materials. (C) 2016 Elsevier B.V. All rights reserved.