Abstract: Quantum electronics are useful for materials for laser technique for use in solid state lasers with emitting wavelength of between 2.8 and 3.1 .mu.m. It has been found possible to raise the gain of laser material, to lower the stimulation threshold for generation, to increase the generation efficiency, and to widen the available range of the industrial generating systems with continuously variable emission wavelengths in the range 2.8 -3.1 .mu.m, including those operating in short-pulse generation and amplification modes. It is also possible to prevent fissures forming in the crystal, to reduce scattering, to improve radiation durability, to decrease dissipation, and to reduce passive absorption. The laser material has a garnet structure and contains between 0.025 formula units (f.u.) And 2.95 f.u. of holmium and in addition at least one of the following elements: Li, Be, B, Na, Ca, Mg, Si, K, Ti, V, Mn, Fe, Co, Ni, Cu, Zn, Ge, Rb, Sr, Zr, Nb, Mo, W, Ta, Hf, and Bi in quantities of between 1.times.10.sup.