Effect of co-dopants on the spectral property of Yb3+ doped silica glasses at 1018 nm

Theoretical and experimental investigation of Al3+ ion-suppressed phase-separation structures in rare-earth-doped high-phosphorus silica glasses

“…Therefore, obtaining high-phosphorus silica-based glasses with stable compositions and homogeneous structures is a major challenge in this field. 35 In Er-Yb co-doped high-phosphorus silica-based glasses, the enrichment of phosphorus elements is usually accompanied by the aggregation of RE ions, which is also considered to be a precursor to glass crystallization, which is undoubtedly detrimental for high-power fiber laser materials. 30,33 To solve this problem, we started using active precursor powders to promote the homogeneous mixing of each doping element at the molecular level, ensuring that the local enrichment of phosphorus elements can occur homogeneously throughout the glass network during vitrification.…”

“…1). 35,36 The tested compositions of the two glasses are shown in Fig. 2a, where the loss of phosphorus was fixed at approximately 10%.…”

“…17 The introduction of a large amount of P 5+ ions can increase the solubility of RE 3+ ions and improve the dispersion of RE 3+ ions in the glass matrix. 35 In the phosphorus-rich region, energy transfer between RE ions can easily occur because of the short distance between RE-RE ions. 30,33 In addition, the PQO double bonds, which are widely present in the P-rich region, have a high phonon energy, which is favorable for suppressing the reverse energy transfer from the excited state of Er 3+ ions to Yb 3+ ions, thus substantially improving the efficiency of energy transfer from Yb 3+ ions to Er 3+ ions.…”

Temperature Dependence of Absorption and Energy Transfer Efficiency of Er3+/Yb3+/P5+ Co-Doped Silica Fiber Core Glasses

“…The detailed preparation process is described in Refs. [30,31]. The thickness of the bulk glasses was polished to 1 mm.…”

Effect of potassium or yttrium introduction in Yb3+-doped germano-gallate glasses on the structural, luminescence properties and fiber processing

“…Yb 3+ ions offer a broad emission band centered at 1030 nm with a longer fluorescence lifetime and are in addition excellent energy transfer sensitizers for other lanthanide elements for up conversion lasers [3]. Due to its technological interest for all-solid-state lasers, the NIR emission of the ytterbium ion doping has been explored in numerous crystals [4]- [6], but also in glasses and glass-ceramics systems such as in silicates [1], [2], [7], phosphates [8], [9], tellurites [10], oxyborates [11] or heavy metal oxides [12]- [15]. Among glasses, Yb 3+ -doped phosphatebased materials led to the most advanced developments as high-power fiber lasers [16]- [18].…”