COMPARISON OF REFRACTIVE AND THERMOOPTIC PARAMETERS OF SOLID-STATE ACTIVE MEDIA OF RECONSTRUCTED LASERS

The refractive index n and its temperature variation dn/dT were invest igated in dye-doped expoxipolymer, LiF : F2 color centres and micropor ous quartz glass activated by dyes in different ways. Those were compa red with ethanol dye solutions. The method of-generation wavelength me asuring was used to determine n and measuring of temperature dependenc e to obtain dn/dT. It is shown that the method has advantage of exclud ing the errors produced by the optical inhomogeneities of solid state matrices. It was also investigated how the part of pump energy being d issipated in active medium during the exitation pulse, influences the refractive index. It is shown that microporous quartz glass doped with dye activated epoxypolymers has the best thermooptical parameters.