S.I. Derzhavin - Ph.D. (Phys.-Math.), Head of Laboratory «Diode Lasers», «Advanced energy technologies» LTD; Head of Laboratory of Powerful Semiconductor Laser Devices, Department of High-Power Lasers, Prokhorov General Physics Institute, Russian Academy of Sciences. E-mail: derzh@kapella.gpi.ru D.A. Mashkovsky - Research Scientist, Laboratory of Powerful Semiconductor Laser Devices, Department of High-Power Lasers, Prokhorov General Physics Institute, Russian Academy of Sciences. E-mail: dma@kapella.gpi.ru V.N. Timoshkin - Research Scientist, Laboratory of Powerful Semiconductor Laser Devices, Department of High-Power Lasers, Prokhorov General Physics Institute, Russian Academy of Sciences. E-mail: vtim@kapella.gpi.ru

S.I. Derzhavin - Ph.D. (Phys.-Math.), Head of Laboratory «Diode Lasers», «Advanced energy technologies» LTD; Head of Laboratory of Powerful Semiconductor Laser Devices, Department of High-Power Lasers, Prokhorov General Physics Institute, Russian Academy of Sciences. E-mail: derzh@kapella.gpi.ru D.A. Mashkovsky - Research Scientist, Laboratory of Powerful Semiconductor Laser Devices, Department of High-Power Lasers, Prokhorov General Physics Institute, Russian Academy of Sciences. E-mail: dma@kapella.gpi.ru V.N. Timoshkin - Research Scientist, Laboratory of Powerful Semiconductor Laser Devices, Department of High-Power Lasers, Prokhorov General Physics Institute, Russian Academy of Sciences E-mail: vtim@kapella.gpi.ru