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

Abstract

Rare-earth-doped silica-based composite glasses (Re-SCGs) are widely used as high-quality laser gain media in defense, aerospace, energy, power, and medical applications. The variable regional chemical environments of Re-SCGs can induce...

Enhanced Radiation Resistance of Er3+/Yb3+ Co-Doped High-Phosphorus Silica Glasses and Fibers via Phase-Interface Engineering

“…However, this did not affect the conclusion, as Er and Yb possess similar chemical properties pertaining to their atomic structures. The primary reason for phase separation in SEY0 glasses has been described in detail in our previous study [33]. This phenomenon arises due to the presence of two different types of network formers in the glass: P 5+ and Si 4+ .…”

“…The growth of second-phase particles induces more rare-earth ions to aggregate inside them, considerably reducing the distance between Yb 3+ ions and Er 3+ ions. Consequently, this enhances the energy-transfer e ciency between Yb 3+ and Er 3+ ions [33]. Meanwhile, the abundant P = O double bonds in the second-phase particles have high phonon energies.…”

“…Erbium-ytterbium-co-doped high-phosphorus silica glasses were prepared using an improved sol-gel method combined with a high-temperature sintering technique, as detailed in previous studies [33,34].…”