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Proceedings Paper

Comprehensive analysis of thermal lensing effects on the coaxial resonator of a high power RF-Excited CO2 laser
Author(s): Viktor Granson; Francisco J. Villarreal; Jochen Deile; Jesus F. Monjardin; Shadi Sumrain
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Paper Abstract

The influence of a variety of parameters, such as the gas composition, pressure and lateral variation of Joule heat release of the discharge at employed frequency, are taken into account to derive a distributed thermal lensing expression and to numerically calculate the focal length as a function of position within the inter-electrode gap. The process of widening of the beam inside the resonator is investigated by means of complex ray methodology. The findings are incorporated into the optimization process of the optical resonator in the stable direction and the impact on the beam quality and power stability is verified by experimental results.

Paper Details

Date Published: 6 February 2012
PDF: 7 pages
Proc. SPIE 8236, Laser Resonators, Microresonators, and Beam Control XIV, 823606 (6 February 2012); doi: 10.1117/12.906888
Show Author Affiliations
Viktor Granson, TRUMPF Inc. (United States)
Francisco J. Villarreal, TRUMPF Inc. (United States)
Jochen Deile, TRUMPF Inc. (United States)
Jesus F. Monjardin, TRUMPF Inc. (United States)
Shadi Sumrain, TRUMPF Inc. (United States)

Published in SPIE Proceedings Vol. 8236:
Laser Resonators, Microresonators, and Beam Control XIV
Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko, Editor(s)

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