Affiliation:
1. Wuhan University of Technology
Abstract
In this paper, we evaluated the spectra parameters of Er3+.The absorption spectra of Er3+:CaF2 transparent ceramic was measured at room temperature (RT). Based on the Judd–Ofelt theory, the intensity parameters were Ω2= 5.02×10−20 cm2, Ω4 = 3.40×10−20 cm2 and Ω6 = 0.38×10−20 cm2, and then the values of the radiative transition probabilities, radiative lifetimes and integrated emission cross-sections of excited states were calculated. Full width at half maximum (FWHM) of the fluorescence spectra for 4I13/2→4I15/2 transition was investigated, being 17nm. The decay time was found to be 24.3ms, which is longer than the theoretically calculated value indicating a radiation trapping effect in this work.
Publisher
Trans Tech Publications, Ltd.
Cited by
2 articles.
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