Propiedades ópticas de los cristales de LiNbO3 dopados con iones Yb3+

T. Kallel, M.Yahyaoui, S.Amdouni, R. Fakhfakh, A. Ben Aissa, I.M. Abdallah , L.F.Hussein


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Información básica

Volumen

V54 - N4 / 2021 Ordinario

Referencia

01-nov

DOI

http://dx.doi.org/10.7149/OPA.54.4.51070

Idioma

English

Etiquetas

Calcium fluoride, laser ceramic, crystal-field theory, Yb3+ions

Resumen

Optical properties of Yb-doped LiNbO3 crystals were investigated. The low temperature absorption and selective emission of LiNbO3:Yb3+ crystals obtained by Montoya et al were reexamined. The LiNbO3:Yb3+ crystals absorption and emission spectra show broad emission due to the presence of four non-equivalent sites: three octahedral sites (Li+ (S1), Nb5+(S2), and a vacant octahedron(S3)) and an interstitial tetrahedral site(S4) . Considering the presence of these four Yb3+ion-occupied sites, and also the electron-phonon coupling processes, the majority of emission and absorption lines was assigned. For the different observed optical centers in LiNbO3, the experimental Stark energy levels of Yb3+ ions were established.