Document Type : Original Article

Authors

• Azizmorad Koushki ¹
• Somayeh Panahibakhsh ²
• Zohreh Rajabi ²

¹ Photonic and Quantum Technologies Research school, Nuclear Science and Technology Research Institute., Tehran, Iran

² Photonic and Quantum Technologies Research school, Nuclear Science and Technology Research Institute

Abstract

In this paper, the six-temperature kinetic model based on the generalized landau-Teller equations is used to optimize a pulsed TEA CO2 laser input parameters. This model was numerically solved by regarding the equations governing the electrical discharge media to obtain density of electrons. In this study, for the first time, the dissociation of the CO2 molecule and the production of CO as a time evaluation equation were dynamically coupled with other rate equations. The time behavior of the discharge current and voltage and laser output pulse power was simulated for CO2:N2:He gases mixture ratio, which are 1:1:3, respectively. Also, the optimum values of the input parameters including the reflectivity of the output mirror, the capacity of the pre-ionization capacitor, and the capacity and charging voltage of the storage capacitor were calculated to obtain the maximum output peak power. The obtained results are significant in the optimum design of TEA CO2 oscillators.

Keywords

• : TEA CO2 laser
• gas ratio
• CO2 dissociation
• six-temperature kinetic model
• the Landau-Teller equations

Main Subjects

• Atomic and Molecular Physics