Estudo espectroscópico de vidros a base de aluminato de cálcio contendo Nd3+

Édison Pecoraro, Luiz Antonio de Oliveira Nunes, Jurací A. Sampaio, Sérgio Gama, Mauro L. Baesso
2000 Química Nova  
Recebido em 8/9/98; aceito em 22/11/99 SPECTROSCOPIC STUDY OF CALCIUM ALUMINATE-BASED GLASSES WITH Nd 3+ . Multicomponent ( Al 2 O 3 , CaO, SiO 2 , MgO) calcium aluminate-based glasses containing Nd 3+ were prepared in order to evaluate their possibilities as laser host materials. The refractive index, UV-visible-near IR absorption spectrum, IR and visible luminescence spectra, and fluorescence decay time were measured. Judd-Ofelt model was used to obtain experimental intensity parameters ( Ω 2
more » ... ty parameters ( Ω 2 , Ω 4 and Ω 6 ), emission cross-section, radiative lifetimes, emission branching ratios and quantum efficiency.
doi:10.1590/s0100-40422000000200004 fatcat:twtafkxpibbijj6x2ktvo22ouq