The spectral properties of Er3+/bismuth active centers co-doped germanate glasses

Erbium-doped bismuth-germanate glasses have been synthesized and their spectral characteristics have been studied. The contour of the absorption spectra in the region of 450– 550 nm is represented by the superposition of the bands of erbium and BACs. It was found that the addition of erbium does not destroy bismuth active centers, which in the future makes it possible to expand the range of NIR luminescence.