Fluorescence and Nonradiative Properties ofNd3+in Novel Heavy Metal Contained Fluorophosphate Glass

[摘要] We demonstrate new series of heavy metal containing fluorophosphate glass system. The fluorescence and nonradiative properties ofNd3+ions are investigated as a function ofNd2O3concentration. The variation of intensity parametersΩ2,Ω4, andΩ6is determined from absorption spectra. The spontaneous probability(A)and branching ratio(β)are determined using intensity parameters. The emission cross sections for the4F3/2→4I13/2transition, which is calculated by Fuchtbabauer-Ladenburg method, decrease from6.1×10−21to3.0×10−21(pm2)and those for the4F3/2→4I11/2transition decrease from3.51×10−20to1.7×10−20asNd2O3concentration increase up to 3 wt%. The nonradiative relaxation is analyzed in terms of multiphonon relaxation and concentration quenching due to energy transfer amongNd3+ions. Finally, the above results obtained at 1 wt%Nd2O3are compared with some of reported laser host glasses which indicated the potentials for broadband-amplifiers and high-power laser applications.

[学科分类] 电子、光学、磁材料