Title :
Parameters affecting the power distribution in the radio frequency discharge of large-area diffusion-cooled CO2 lasers
Author :
Lapucci, A. ; Mascalchi, S. ; Ringressi, R.
Author_Institution :
Ist. Nazionale di Ottica, Florence, Italy
fDate :
4/1/1998 12:00:00 AM
Abstract :
An efficient power extraction from radio frequency (RF) excited CO 2 lasers can only be obtained by means of a uniform discharge power distribution. This distribution is mainly determined by the line-effect produced by the discharge structure. In this paper we report on a set of measurements performed on the luminosity of a large-area discharge showing the role played by parameters such as local gas temperature, density, and composition. In particular, the existence is shown of conditions in which these parameters move distributions away from the known sheaths driven lossless line behavior
Keywords :
carbon compounds; cooling; diffusion; excited states; gas lasers; high-frequency discharges; laser theory; CO2; RF excited CO2 lasers; composition; density; discharge structure; efficient power extraction; large-area diffusion-cooled CO2 lasers; large-area discharge; line-effect; local gas temperature; lossless line behavior; luminosity; power distribution; radio frequency discharge; uniform discharge power distribution; Capacitance; Electrodes; Impedance; Laser excitation; Laser modes; Power distribution; Power lasers; Power transmission lines; Radio frequency; Voltage;
Journal_Title :
Quantum Electronics, IEEE Journal of
