J. Phys. IV France 04 (1994) C4-415-C4-418
Crystal growth and optical properties of Er:CAS (Ca2Al2SiO7) and Er:SLG (SrLaGa3O7)A. MAURIZI, B. TEISSEIRE, B. VIANA, D. SABER, A.M. LEJUS and D. VIVIEN
Laboratoire de Chimie Appliquée de l'Etat Solide, URA 1466 du CNRS, ENSCP, 11 rue Pierre et Marie Curie, 75231 Paris cedex 05, France
The optical properties of Er3+ doped Ca2Al2SiO7 (CAS) and SrLaGa3O7 (SLG) are described in this paper. Er3+ solubility is determined for the two laser hosts. Cross-relaxation processes and multiphonon desexcitation are observed and the relative rates are calculated with the frame of the Judd-Ofelt analysis. Er:SLG presents some longer lifetimes and smaller multiphonon non radiative contribution than the Er:CAS. Both laser hosts present a broad and intensive emission around 1.5 µm. In this paper are also discussed the mechanisms that can reduce the laser oscillation efficiency.
© EDP Sciences 1994