Optical and laser properties of new Er:Yb zinc-silicate glasses
2012
In this work we have studied fundamental passive and active parameters of new family of erbium and ytterbium doped
zinc-silicate glasses with different doping concentration and ratio of erbium and ytterbium ions. Parameters as absorption
coefficient, saturation of absorption, emission wavelength, fluorescence lifetime and up-conversion spectra were
measured. The laser performance was studied in end-diode pumped configuration with hemispherical resonator. As an
excitation source a 30W fiber coupled 975 nm laser diode in pulsed regime was used. Laser action was achieved with
four different samples of zinc-silicate glasses on wavelengths ranging from 1540nm to 1570nm. The results were
compared with the properties of commercially available phosphate glasses and previous zinc-silicate glass which have
similar threshold energy corresponding to 3,3mJ and 3mJ respectively. Newly designed zinc-silicate glasses prepared
under improved conditions showed substantially better optical and laser properties in comparison with the previously
prepared samples.
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