Naslov
Tm3+ and Yb3+ co-doped tellurite glasses for short cavity optical fiber lasers : fabrication and optical characterization

Autori
Milanese, Daniel ; Gebavi, Hrvoje ; Lousteau, Joris ; Ferraris, Monica ; Schülzgen, Axel ; Lib, Li ; Peyghambarian, Nasser ; Taccheo, Stefano ; Auzel, Francois

Izvornik
Journal of non-crystalline solids (0022-3093) 356 (2010), 44/49; 2378-2383

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
tellurite glass; Tm; Yb

Sažetak
In this paper Tm-doped tellurite glasses (75TeO2– 20ZnO–5 Na2O, mol%) were studied and sensitization with Yb3+ as co-dopant was carried out in order to assess its influence on the emission properties and improve pump efficiency and wavelength emission range. Emission spectra and lifetime measurements were obtained by pumping either at 785 nm or 980 nm, thus exploiting the Yb–Tm energy transfer mechanism. Doping levels of Yb from below 1 to up 5 mol% were investigated in order to evaluate the effectiveness of energy transfer process and glasses containing an overall content of 9 mol% rare earth ions were proved to be successfully fabricated. All glasses were fully characterized from a material and spectroscopic point of view. Tellurite glasses with 4 and 1 mol% of Tm3+ and Yb3+ ions respectively were found to show a good compromise between emission efficiency and lifetime decay values. A quenching concentration of Yb3+ ions up to 14 mol% was also defined for this type of glass system.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija

Napomena
Rad je prezentiran na skupu 12th International Conference on the Physics of Non-Crystalline Solids (PNCS 12).

POVEZANOST RADA