Journal of Crystal Growth, Vol.229, No.1, 497-500, 2001
Fluoride crystals: 2 mu m Ho3+ laser emission and energy transfer mechanisms in Er3+
A spectroscopic analysis of nonlinear energy transfer in BaY2F8 and LiYF4 doped with Er3+ is reported. We developed a new method to measure the upconversion parameter based on the sinusoidal modulation of the pump beam intensity and on the intensity spectrum analysis of the green fluorescence. We also present cw laser results in the 2 mum wavelength region of a Tm,Ho : LiYF4 crystal with 30% slope efficiency at room temperature.
Keywords:characterization;Czochralski method;yttrium compounds;nonlinear optic materials;solid state lasers