Development of laser elements with non-linear distribution of active ions

An approach associated with the use of active media with a non-uniform dopant ions concentration distribution is proposed to increase the pulse energy level and optimize the high power laser amplifier parameters. The optimal profiles of the laser-active ions gradient distribution in the amplifying medium were determined. A crystal sample was obtained in which the concentration of the activator changes sharply from 5 at.% to 10 at.% over a length of 3–5 mm.