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Proceedings Paper

Microwave Excited CO[sub]2[/sub]-Lasers
Author(s): B. Freisinger; J. H. Schafer; J. Uhlenbusch; Z. B. Zhang
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Paper Abstract

The excitation of CO2-N2-He gas mixtures by means of microwaves (V = 2.45 GHz) leading to laser action is posstblb. In order to avoid hot boundary layers near the discharge wall a proper distribution of the gas flow and the microwave field must be chosen. Additionally an ignition setup is necessary to achieve a homogeneous glow in the discharge tube. In a first part of this paper ignition and permanent maintenance of a microwave discharge as well as the kinetic processes leading to laser action are studied on a theoretical base. The theoretical data are compared with experimental ones obtained from an ignition experiment and CO2-laser devices of 0.3 or 1 kW cw output power, respectively. Examples for continuous and pulsed laser operation are given.

Paper Details

Date Published: 26 October 1989
PDF: 8 pages
Proc. SPIE 1132, High Power Lasers and Laser Machining Technology, (26 October 1989); doi: 10.1117/12.961557
Show Author Affiliations
B. Freisinger, Heinrich-Heine-Universitat (Germany)
J. H. Schafer, Heinrich-Heine-Universitat (Germany)
J. Uhlenbusch, Heinrich-Heine-Universitat (Germany)
Z. B. Zhang, Heinrich-Heine-Universitat (Germany)

Published in SPIE Proceedings Vol. 1132:
High Power Lasers and Laser Machining Technology

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