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Proceedings Paper

Prediction Of Output Power From High prf CO2 Lasers For Use In Manufacturing Processes
Author(s): Charles A Byabagambi; Chris R Chatwin; Brian F Scott
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Paper 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.

Paper Details

Date Published: 21 October 1986
PDF: 8 pages
Proc. SPIE 0650, High Power Lasers and Their Industrial Applications, (21 October 1986); doi: 10.1117/12.938077
Show Author Affiliations
Charles A Byabagambi, University of Glasgow (Scotland)
Chris R Chatwin, University of Glasgow (Scotland)
Brian F Scott, University of Glasgow (Scotland)

Published in SPIE Proceedings Vol. 0650:
High Power Lasers and Their Industrial Applications
Dieter Schuoecker, Editor(s)

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