Spectral properties of erbium-doped lead halotellurite glasses for 1.5 mu m broadband amplification

The spectral properties of the Er3+-doped lead halotellurite glasses, PbX2- TeO2 (X = F, Ci, Br), were measured and analyzed with Judd-Ofelt and McCumb er theories. These glasses showed high refractive indices, high cross-secti ons for both absorption and stimulated emission, and very broad bandwidths for the 1.5 mu m band. The bandwidths of the 1.5 mu m band, which have subs tantial magnetic dipole transition component, increased significantly with the refractive index of the host materials. The halotellurite glasses have very good glass formation ability or glass stability. The halotellurite gla sses will be the promising host materials for 1.5 mu m broadband amplificat ion. (C) 2000 Elsevier Science B.V. All rights reserved.