Modeling of Kinetic and Thermodynamic Processes in a Flowing Exciplex Pumped Alkali Vapor Laser

This is the authors' abstract. We don't add key points for this paper.

On the basis of analysis of kinetic and thermodynamic processes of extremely high power CW exciplex pumped alkali vapor laser (XPAL), we establish a physical model to calculate and analyze 2-D and 3-D distributions of temperature as well as the intensity of laser beam in cavity with a different flowing velocity in the cell. Comparison between the simulated results of temperature distribution and laser characters of single-end and double-end scheme is drawn, demonstrating the advantages of double-end flow scheme, which actually means more homogeneous distributions of temperature and alkali atoms resulting in higher optical-optical efficiency. Enhancing pressure of argon to ~10 atm, with optimized pumped intensity of 2.54 × 105W/cm2and optimized cavity length of 80 cm, we obtain more detailed simulated results of broadband pumped XPAL with four or five-level system.