UDC 621.378.324
EFFECTIVE AUTO–EMISSION COATINGS OF CATHODES OF SMALL–SIZED TEA–CO2 LASERS BASED ON NANOSTRUCTURED CARBON MATERIALS
B. A Kozlov, Dr. Sc. (Phys. and. Math.), professor, department of electronic devices RSREU, Ryazan, Russia;
orcid.org/ 0000-0003-4747-6340, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Mai The Nguyen, post-graduate student, RSREU, Ryazan, Russia;
orcid.org/0000-0002-4360-853X, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
The effect of nanostructured carbon coatings on current density and pump energy in small-sized sealed-off TEA – CO2 lasers is studied. It has been established that the deposition of thin layers of carbon soot containing carbon in various nanostructured forms contributes to the increase in current density of pumped volume discharge by 1,5 – 2,2 times and pump energy density by 2 – 2,4 times in CO2 laser mixtures at atmospheric pressure. The aim of this work was to experimentally study field-specific characteristics of cathodes coated with carbon soot and to determine the relationship between volume density of current and pump energy in discharge gaps formed by metal electrodes and the same electrodes coated with a layer of carbon soot.
Key words: nanostructured forms of carbon, field electron emission, volume discharge current, current density, pump energy, CO2 laser mixture.