Laser‐excited luminescence in Ti‐doped MgAl2O4spinel
作者:
L. E. Bausa´,
I. Vergara,
J. Garci´a‐Sole´,
W. Strek,
P. J. Deren,
期刊:
Journal of Applied Physics
(AIP Available online 1990)
卷期:
Volume 68,
issue 2
页码: 736-740
ISSN:0021-8979
年代: 1990
DOI:10.1063/1.346807
出版商: AIP
数据来源: AIP
摘要:
The photoluminescence (excitation, emission, and fluorescence decay time) spectra of spinel (Ti:MgAl2O4) excited by pulsed Nd:YAG and dye lasers have been systematically investigated. Excitation into theT2g→Egcrystal‐field transition of Ti3+produces a broad infrared emission band at 805 nm which could, in principle, be used for tunable laser applications. Two different Ti3+centers with lifetimes of 4.2 and 41 &mgr;s contribute to this emission. At the same time this IR band can also be observed under high‐intensity excitation in the ultraviolet region (266 nm) via a two‐photon process.
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