Barthalay, N. ; Lebbou, K. ; Li, H. ; Motto-Ros, V. ; Pezzani, C. ; Silvestre, M. ; Trichard, F.
Ti-doped sapphire; Titanium distribution; Kyropoulos; Czochralski; LIBS measurement;SAPPHIRE LASER; CRYSTALS; TI-AL2O3
The titanium distributions in Ti-doped sapphires grown by Czochralski and Kyropoulos techniques were evaluated using Laser-Induced BreakdownSpectroscopy (LIBS) and luminescence characterizations. Distinctly different radial profiles of Ti4+ distribution were observed in the as grown Ti: Al2O3 crystals. The TO4+ distribution in the crystal grown by Kyropoulos technique was analyzed as a function of the specific of the growth technique, the conclusion is significant for Ti: sapphire on laser-application. Kyropoulos technique presents an advantage to reduce the proportion of Ti4+ in Ti: sapphire comparing to Czochralski technique. (C)2016 Elsevier B.V. All rights reserved