Near-infrared emission of erbium-doped oxyfluoride lead borate glass for broadband optical amplifier

Rare earth - doped heavy metal glasses (HMG) are one of the most important optical systems, which can be used for the design of solid-state laser materials and fiber light sources. Among the numerous heavy metal systems, erbium - doped lead borate glass exhibits quite large stimulated emission cross-section and broad fluorescence width at half maximum (FWHM) at 1.55 μm band due to ⁴I₁₃2/ - ⁴I₁₅2/ transition, which is eye-safe and used for infrared optical telecommunication system. Spectroscopic properties of erbium - doped oxyfluoride lead borate glasses in multicomponent PbO - PbF₂ - B₂O₃ - Al₂O₃ - WO₃ system were investigated. The spectral linewidth analysis for main near-infrared emission spectra of the ⁴I₁₃2/ - ⁴I₁₅2/ transition and the luminescence decay curve measurements of the ⁴I₁₃2/ excited level of Er³⁺ were performed.