The blue up-conversion luminescence of vitroceramics codoped with Tm3+ and Yb3+ ions pumped with 680 nm

✍ Scribed by Xu Wu; J.P. Denis; G. Özen; Ph. Goldner; M. Genotelle; F. Pellé

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 301 KB
• Volume: 203
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(93)85389-6

✦ Synopsis

A study of the spectroscopic properties of PbFS+ GeO, t WO, vitroceramics doped with Tm'+ and codoped with Yb" and Tm'+ ions upon 680 nm dye laser light excitation is made. The up-conversion emission and excitation spectra have been measured at room temperature. An enhancement of blue emission centered at 478 nm in the codoped sample is observed. We suggest that this result is due to the interaction between Yb'+ and Tm3+ ions. When the excitation power of-680 nm light is increased, a three-photon absorption process happens for another blue (45 I nm) emission.