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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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