Study of the possibility of developing a multichannel-diode-pumped multikilowatt solid-state laser based on optically dense active media

Optimal conditions are determined for the development of efficient diode-pumped 1-μm solid-state lasers with output powers up to a few tens of kilowatts. The thermal operating conditions are analysed for various Yb³⁺- or Nd³⁺-doped active media used in high-power laser systems. The advantages and disadvantages of these active ions and various crystal matrices are discussed. The theoretical analysis and experimental simulations allow one to determine the application fields of various laser crystals. A new concept of a multibeam (multipoint) pumping of active media is proposed.