CO2 Laser Capacitive-excited with Radio Frequency of 450 kHz

The present work described the build and characterization of a CO2 laser excited with a capacitive electric discharge of radio frequency of 450 kHz. The system used two external electrodes cooled with water and the discharge is product in a gas flow of 75 m/s, with a mixture gas of CO2:N2:He with proportion of 1:10.2:11.5 and 45 mbar of pressure. The discharge tube is of 22 mm of internal diameter (1.5 mm of wall), and a maximal supply power of 1.3 kW with a voltage discharge of 3.4 kV and a current of 700 mA, as well as a optic power of 22 W of 10.6 mm wavelength. Radiation is obtained in the E/N interval of 7X10-15 a 1.2X10-15 V*cm2.