TY - JOUR
T1 - Ti-doped MgAl2O4 spinel single crystals grown by the micro-pulling-down method for laser application
T2 - Growth and strong visible blue emission
AU - Jouini, Anis
AU - Sato, Hiroki
AU - Yoshikawa, Akira
AU - Fukuda, Tsuguo
AU - Boulon, Georges
AU - Panczer, Gérard
AU - Kato, Kiyoshi
AU - Hanamura, Eiichi
PY - 2006
Y1 - 2006
N2 - The photoluminescence spectra of the rod-shaped pure and Ti-doped MgAl 2O4 single crystals, grown by the micro-pulling-down (μ-PD) method, have been systematically investigated under high-intensity pulsed Nd3+: YAG laser excitation in the ultraviolet (UV) region (266 nm). The chemical properties of the grown crystals under reducing argon atmosphere will be reported and the annealing effect under oxidizing atmosphere will be discussed. The room temperature luminescence properties of Ti-doped MgAl2O4 single crystals were performed before and after annealing as a function of the titanium concentration. Three broad bands absorption in the UV/VIS (visible) spectral regions and a broadband visible blue emission were observed from Ti-doped MgAl2O4. An estimation of the decay time value of theses emissions was determined from the time-resolved spectra and the energies of the vibrational modes of the MgAl 2O4 crystal are obtained from the infrared spectra.
AB - The photoluminescence spectra of the rod-shaped pure and Ti-doped MgAl 2O4 single crystals, grown by the micro-pulling-down (μ-PD) method, have been systematically investigated under high-intensity pulsed Nd3+: YAG laser excitation in the ultraviolet (UV) region (266 nm). The chemical properties of the grown crystals under reducing argon atmosphere will be reported and the annealing effect under oxidizing atmosphere will be discussed. The room temperature luminescence properties of Ti-doped MgAl2O4 single crystals were performed before and after annealing as a function of the titanium concentration. Three broad bands absorption in the UV/VIS (visible) spectral regions and a broadband visible blue emission were observed from Ti-doped MgAl2O4. An estimation of the decay time value of theses emissions was determined from the time-resolved spectra and the energies of the vibrational modes of the MgAl 2O4 crystal are obtained from the infrared spectra.
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U2 - 10.1557/jmr.2006.0280
DO - 10.1557/jmr.2006.0280
M3 - Article
AN - SCOPUS:33845667235
SN - 0884-2914
VL - 21
SP - 2337
EP - 2344
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 9
ER -