Prediction Of Output Power From High prf CO2 Lasers For Use In Manufacturing Processes

Charles A Byabagambi; Chris R Chatwin; Brian F Scott

doi:10.1117/12.938077

21 October 1986 Prediction Of Output Power From High prf CO₂ Lasers For Use In Manufacturing Processes

Charles A Byabagambi, Chris R Chatwin, Brian F Scott

Proceedings Volume 0650, High Power Lasers and Their Industrial Applications; (1986) https://doi.org/10.1117/12.938077
Event: 1986 International Symposium/Innsbruck, 1986, Innsbruck, Austria

Abstract

Previous computer simulations of high mean power, high pulse repetition frequency (p.r.f.) lasers have predicted the characteristics of the first output pulse only. This pulse, however, is not representative of subsequent pulses as the simulation is initiated using conditions based on thermodynamic equilibrium. Using a modified kinetic model which incorporates plasma temperature variation, optical cavity characteristics and a transverse gas flow, the simulation was extended to include the second and hence subsequent output power pulses. A substantial difference was found between the first and second pulse profiles and also their temporal relationship with the electrical pumping pulse. This extended model gives closer agreement with experimental measurements made under continuously running conditions. The modelling is essential as it identifies the control variables which can be used to optimize beam characteristics for material processing applications.

Citation Download Citation

Charles A Byabagambi, Chris R Chatwin, and Brian F Scott "Prediction Of Output Power From High prf CO₂ Lasers For Use In Manufacturing Processes", Proc. SPIE 0650, High Power Lasers and Their Industrial Applications, (21 October 1986); https://doi.org/10.1117/12.938077

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