Growth and characterization of LiYF4:Nd single crystal fibres for optical applications

Growth and luminescence characteristics of cerium-doped yttrium pyrosilicate single crystal

“…So a relative large degree of supercooling can be obtained through a relative long YPS melting zone and a relative fast growth rate. What's more, the actual composition is slightly enriched in SiO 2 (in this paper, excess 2 at%), which is in favor of avoiding the nucleation of 2Y 2 O 3 ·3SiO 2 (The same method has been adopted in the crystal preparation of incongruent compound LiYF 4 :Nd in Santo's work [23]). …”

Synthesis and growth of materials for solid state lasers: Nd:YLF and Nd:LLW single crystal fibers

“…For YLF single fibers growth, LiF in excess was needed. The same methodology was applied to pull Nd:YLF single-crystalline fibers with nominal concentrations of 1.7 mol% [14] with similar results.…”

“…3) were grown using the experimental conditions described above. The YLF phase was directly crystallized on the fiber seeding without the formation of the peritetic transient stage, reported in previous works of our group [12,14]. Such diverse behavior may be attributed to modifications in the methodology of Nd:YLF single fiber growth: the additional high vacuum treatment (10 À 7 Torr pressure inside the growth chamber) carried out before the fiber pulling and the use of a static atmosphere instead of a continuous gas flow on the growth process.…”

“…Before the Nd:YLF growth process, the growth chamber was first heated under a vacuum of 10 À 3 Torr and back-filled with ultra-pure argon, following a procedure already described in previous works [12][13][14]. To improve the purity of the atmosphere, the growth chamber was kept under 10 À 7 Torr vacuum, for 24 h. Instead of using a flow of gas during the growth process, the chamber was back-filled with a mixed atmosphere of CF 4 plus Ar and kept at constant pressure (0.1 Kgf/cm 2 ).…”

Growth and characterization of single crystal fibers of Nd3+:NaLa(WO4)2

“…In the µPD method, the fiber growth stability is controlled through the capillarity effect where the meniscus shape must be carefully controled so that an uniform fiber pulling process occurs [7]. Details about µPD method can be found in the refs.…”