Optical spectroscopy of Dy3+ ions in heavy metal lead-based glasses and glass–ceramics

Abstract: Dysprosium-doped heavy metal glasses and transparent glass–ceramics have been investigated using optical spectroscopy. Visible luminescence due to 4F9/2–6H J /2 (J =11, 13, 15) transitions of Dy3+ was registered. Based on excitation and emission spectra as well as luminescence decay analysis, some spectroscopic parameters for Dy3+ ions in glass samples before and after annealing were determined. Especially, the yellow-to-blue luminescence intensity ratios Y/B corresponding to the 4F9/2–6H15/2 and 4F9/2–6H13/2 transitions of Dy3+ ions were analyzed as a function of glass host composition and thermal treatment. [Copyright &y& Elsevier]