A way is made for creating active laser things (spectrum selection 4 to five?m) based onpolycrystalline sound options ZnSxSex??doped with iron ions. Bilateral diffusion doping in the elementsby Fe2+ions is performed for the duration of hot isostatic urgent. Spectral and Strength features of the laserare investigated With all the Fe2+:ZnS0.1Se0.9act