Abstract

Trivalent rare-earth ions in fluorides are known to form different optical centers due to non isovalent substitution of divalent cations and different forms of charge compensation. The set of optical centers usually depends on the type of rare-earth ions, their concentration and fluoride host. Existence of wide range of fluoride solid-solutions also allows to influence the process of optical centers formation and thus manipulate the spectroscopic and oscillation properties of rare-earth ions [1].

© 2009 IEEE