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 (Moscow) E-mail: derzh@kapella.gpi.ru S.M. Klimentov  Head of Laboratory of Photonic Devices and Technologies, Department of Coherent and Nonlinear Optics, Prokhorov General Physics Institute, Russian Academy of Sciences (Moscow) E-mail: kliment-61@mail.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 (Moscow) 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 (Moscow) E-mail: vtim@kapella.gpi.ru

The results of the constructing the powerful pulse solid-state (Nd:YAG) laser with the diode pumping having prespecified output parameters: average pulse energy - 100 mJ, average pulse duration - 30 ns, repetition rate - up to 300 Hz are presented in this article. The work was carried out in two stages: the first one consisted of creating the model sample of the laser with the continuous diode pumping, that was intended to adjust optimum quantron design; the second one was creating the final version of the laser with a pulse diode pumping. The main distinction between them consisted of a way to supply the pumping radiation. The main problems had been solved during the work implementation were the following: providing the homogeneous and high-performance pumping radiation absorption within the active medium; realizing the safe cooling of the active element and maintaining the stable temperature mode within quantron; receiving steady generation of the laser with the prespecified output parameters. The laser development was executed on the basis of experimental researches in which dependences of output radiation power on the pumping current, on the diode temperature, on the resonator length, on the resonator mirrors reflectance, on the focal length of a thermal lens etc were studied. The stable generation of few deca-nanoseconds pulse mode was polished. The design of the developed laser allows to use replaceable quantrons intended for various operating modes and power characteristics of the laser. It allows to change rather flexibly the laser parameters in a wide range and to use it for various applications.

 

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