Absorption and fluorescence of Er3+-doped LiYF4: Measurements and simulation
Nenhuma Miniatura disponível
Data
1998-07-24
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Tipo
Artigo
Direito de acesso
Acesso restrito
Resumo
Er3+:LiYF4 single crystal has been studied by absorption and fluorescence spectroscopy in the IR-visible-UV (0-44000 cm-1) region from 4.2 K to room temperature. Polarized spectra were recorded in order to assign numerous Stark levels of electronic transitions mentioned but not attributed before in the related literature and to discuss the irreducible representations (irreps) of the 4I15/2 sublevels. A parametric hamiltonian, including free ion (Eν, α, β, γ, Tλ, ζ, Mk and Pi) and crystal field parameters (B2 0, B4 0, B4 4, B6 0 and B6 4) in an approximate D2d symmetry for the rare earth site in this scheelite type structure, was used to simulate 109 energy positions of the Er ion with a r.m.s. standard deviation of 14.6 cm-1. A comparison with previously published results for Nd3+ in the same matrix is done. © 1998 Elsevier Science S.A.
Descrição
Palavras-chave
Absorption , Fluorescence , LiYF4 , Absorption spectroscopy , Computer simulation , Crystal structure , Doping (additives) , Electron energy levels , Electron transitions , Erbium , Ion implantation , Lattice constants , Optical materials , Single crystals , Laser crystals , Lithium yttrium fluoride , Lithium compounds
Idioma
Inglês
Como citar
Journal of Alloys and Compounds, v. 275-277, p. 435-441.