The role of tungsten oxide in Er³⁺-doped bismuth-germanate glasses for optical amplification in L-band.

ABSTRACT: A series of novel Er³⁺-doped bismuth-germanate glasses containing different tungsten concentrations with a molar composition of 97.5[(75 - x)GeO₂-25Bi₂O₃-(x)WO₃]-2Sb₂O₃-0.5Er₂O₃ (x = 5, 10, 15, 20, and 25 mol%) were fabricated. Their thermal properties are measured by differential scanning calorimetry. A structural investigation by Raman spectroscopy suggested that changes occurred in the glass network by WO₃ incorporation. By laser excitation at 980 nm, a strong emission from Er³⁺ ions at 1532 nm is observed, while the WO₃ addition caused changes in the emission spectra. The emission cross-section spectra of Er³⁺ are calculated by both McCumber and

SUBMITTER: Camici HC 

PROVIDER: S-EPMC10232524 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature