Rare earth mixed transparent oxyfluoride glass ceramic and preparation process thereof

Abstract

A transparent glass ceramics of RE-doped oxyfluoride is proportionally prepared from SiO2, Al2O3, EnF2, MF2 and ReF3, where M is 2-valence alkali-earth metal ion chosen from Mg, Ca, Sr, and Ba and Re is 3-valence RE ion chosen from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, through high fusing and heat treating. It can be extensive used in laser, luminous and optical communication field.

Description

technical field

[0001] The invention relates to rare earth-doped transparent oxyfluoride glass ceramics and a preparation method thereof. Background technique

[0002] Rare earth ion-doped oxyfluoride glass-ceramics have attracted widespread attention for their potential applications in laser fibers, fiber amplifiers, and upconversion luminescence. By heat treatment of rare earth ion doped oxyfluoride glass, oxyfluoride glass ceramics uniformly distributed with fluoride nanocrystal phases can be obtained, and rare earth ions can be enriched in these fluoride nanocrystals as nucleating agents. Therefore, this kind of material can not only provide a low phonon energy environment of fluoride that is favorable for the luminescence of rare earth ions, but also contain a large amount of oxides in the matrix, and also have mechanical properties and chemical stability comparable to oxide glasses.

[0003] As early as the early 1990s, Y.Wang and J.0hwaki (“New Transparent Vitroceram...