Growth and characterization of new disordered crystals for the design of all-solid-state lasers

We examine crystals belonging to two wide families of compounds of general chemical formulae ABC3O7 and ABCO4 (A= Ca, Sr, Ba; B= Y, La-Gd; C= Al, Ga) which appear to be promising active materials for the design of all-solid-state lasers. Inhomogeneous broadening of spectral lines weakly influences the extraction efficiency in the case of SrLaGa3O7 : Nd and BaLaGa3O7 : Nd, but it is found to be a limiting factor that controls the performance of SrLaAlO4:Nd laser. Preliminary spectroscopic study indicates that chromium-doped SrLaAlO4 and SrLaGaO4 may be promising active materials for the design of tunable infrared lasers.