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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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)|
|Title:||COIL Fiber Transmission for Material Cutting Applications|
|Journal or Publication Title:||XIV Int. Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference|
|Page Range:||pp. 345-349|
|Series Name:||Proceedings of SPIE|
|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|
|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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