PbO–Bi2O3–Ga2O3–BaO–Dy3+ glasses for IR luminescence

Infrared luminescence from Dy3+ ions embedded in PbO–Bi2O3–Ga2O3–BaO glass hosts is reported for room and helium liquid temperatures. The substantial influence of energy transfer processes between the glass host and Dy3+ ions is shown experimentally through the dependences of photoluminescence on light polarization and excitation wavelength. Only polarized excited pulsed YAG-Nd laser light (λ=714 nm) gives substantial IR luminescence with efficiency up to 41%. The role of the phonon-relaxation subsystem in the observed luminescence is discussed.