Energy Parameters And Resource Of High-Power Pulse-Periodical Sealed-Off Tea-Co2 Lasers

Physical processes proceeding over the active electrode surfaces and their influence on a spatial plasma homogeneity of the volume discharge as well as the energy parameters and the resource of sealed-off pulse-periodical TEA-CO2 lasers have been investigated. Microstructures of the active electrode surfaces which lead to the increase of autoelectronic emission have been found to be formed under the influence of the volume discharge plasma and the products of plasma chemical reaction. The increased values of these currents initiate the formation of local channels in the cathode area of a volume dischargeand initiation complete transition of volume discharge into a local one. The electrode materials, which provide the formation of stable volume discharges are determined and a maximum resource of sealed-off TEA-CO2 lasers is achieved.