UDC 621.373.826
ANALYSIS OF PUMPING DISCHARGE PLASMA MACROINHOMOGENEITIES INFLUENCE ON THE LIMITATIONS OF TEA-CO2 LASER AVERAGE RADIATION POWER
B. A. Kozlov, Dr. in physics and mathematical sciences, full professor, department of industrial electronics, RSREU,Ryazan, Russia;
orcid.org/0000-0001-5957-3688, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
E. A. Kozlov, PhD (technical sciences), associate professor, department of industrial electronics RSREU, Ryazan, Russia;
orcid.org/0000-0003-2038-6732, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
D. S. Makhanko, PhD (technical sciences), senior researcher, JSC Plasma, Ryazan, Russia;
orcid.org/0000-0002-7609-9970, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
When TEA-CO2 lasers are excited at pulse repetition frequencies exceeding 300 – 500 Hz, the zones with increased glow brightness – plasma «macroinhomogeneities» are formed in the discharge gap. Their formation initiates the transformation of pumping volume discharge into a high-current local discharge and the breakdown of laser radiation generation. Eliminating plasma macroinhomogeneities enables an increase in pulse repetition frequency by 1,5 – 2 times and in average radiation power level by 1,3 times.
Key words: TEA CO2-laser, pumping, volume discharge, preionization, plasma macroinhomogeneities, volume discharge localization, pulse repetition frequency, average radiation power.