A way is made for generating active laser features (spectrum array four to 5?m) centered onpolycrystalline sound answers ZnSxSex??doped with iron ions. Bilateral diffusion doping of the elementsby Fe2+ions is carried out in the course of warm isostatic urgent. Spectral and energy features of your laserare investigated With all the Fe2+:ZnS0.1Se0.9a