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COIL Fiber Transmission for Material Cutting Applications

Handke, J. and Duschek, F. and Grünewald, K. and Schall, W.O. (2003) COIL Fiber Transmission for Material Cutting Applications. In: XIV Int. Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, 5120, pp. 345-349. SPIE. XIV Int. Symposium on Gas Flow and Chemical Lasers and High-Power laser Conference, Breslau (Wroclaw), 25.-30. 8. 2002. ISBN 0-8194-4980-6.

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Abstract

The 10kW-class Chemical Oxygen-Iodine Laser (COIL) device of DLR was used for demonstration of efficient power coupling into a commercial fiber optic system (HIGHYAG, Berlin) modified for 1.315 µm radiation. Transmission investigations were performed with different intra-cavity apertures of the stable COIL resonator to match the outcoupled laser beam to the fiber optic system. The transmitted power through the 20 m long fiber with core diameter of 1000 µm exceeded 6 kW during a typical 8 s test run of the laser. The highest transmitted power amounts to 11 kW, the highest value reported in literature. The transmission ratio was above 90%. Samples of metal and non-metal materials were cut by using nitrogen as processing gas. The materials were selected with regard to their application in the contaminated area of nuclear power plants. The results of the cutting experiments were used in theoretical models for extrapolation of the cutting data. Scaling studies were performed to estimate achievable cutting depth with COIL systems of higher laser power.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2002,
Title:COIL Fiber Transmission for Material Cutting Applications
Authors:
AuthorsInstitution or Email of Authors
Handke, J.UNSPECIFIED
Duschek, F.UNSPECIFIED
Grünewald, K.UNSPECIFIED
Schall, W.O.UNSPECIFIED
Date:2003
Journal or Publication Title:XIV Int. Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference
Volume:5120
Page Range:pp. 345-349
Editors:
EditorsEmail
SPIE - The International Society for Optical Engineering Edward F. Plinski, UNSPECIFIED
Publisher:SPIE
Series Name:Proceedings of SPIE
ISBN:0-8194-4980-6
Status:Published
Keywords:COIL, fiber transmission, laser cutting, decommissioning, dismantling of nuclear power plants
Event Title:XIV Int. Symposium on Gas Flow and Chemical Lasers and High-Power laser Conference, Breslau (Wroclaw), 25.-30. 8. 2002
Organizer:Department of Electronics, Wroclaw University of Technology (Poland)
HGF - Research field:Energy
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Energy
DLR - Program:L - no assignement
DLR - Research theme (Project):L - Laser Research and Technology
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics
Deposited By: Dr.rer.nat. Hans-Albert Eckel
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 14:47

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