Optical properties of Dy3+-doped sodium–aluminum–phosphate glasses
Source abstract
Abstract
Trivalent dysprosium (Dy3+)-doped sodium–aluminum–phosphate (NAP) glasses were prepared and characterized by their optical absorption, excitation, emission spectra, and decay time measurements. Judd–Ofelt intensity parameters were derived from the absorption spectrum and used to calculate the radiative lifetime and stimulated emission cross section of the 4F9/2 → 6H13/2 and 4F9/2 → 6H15/2 transitions. The luminescence intensity ratio of 4F9/2 → 6H13/2 to 4F9/2 → 6H15/2 transitions of Dy3+ in NAP glasses gives the feasibility of extracting white light. The lifetime and quantum efficiency of 4F9/2 level is found to be higher than other reported glasses. With increase in Dy3+ ion concentration, the decay from 4F9/2 level is found to be faster with decrease in lifetime due to cross relaxation between Dy3+ ions.
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Research context
OpenAlex topics: Glass properties and applications · Luminescence Properties of Advanced Materials · Solid State Laser Technologies
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