We developed a 200 W Class Nd:YAG laser with unstable resonator. We investigated the operational characteristics of laser with positive branch unstable resonator and analyzed the influence of laser parameters on the laser materials processing. Also, we designed and fabricated laser power supply for the modulated cw Nd:YAG laser and then measured the output parameters of this laser. To accelerate the commercialization by the joint company, the training and transfer of technology were pursued in the joint participation by company researchers from the early stage. (Author).