DocumentCode :
741669
Title :
High-Brightness Incoherent Combination of Fiber Lasers in 7 × 1 Fiber Couplers at Average Powers > 5 kW
Author :
Jager, Matthias ; Plotner, Marco ; Eschrich, Tina ; de Vries, Oliver ; Kobelke, Jens ; Schreiber, Thomas ; Unger, Sonja ; Eberhardt, Ramona ; Bartelt, Hartmut ; Tunnermann, Andreas
Author_Institution :
, Leibniz Institute of Photonic Technology, Jena, Germany
Volume :
33
Issue :
20
fYear :
2015
Firstpage :
4297
Lastpage :
4302
Abstract :
We report on the experimental realization of two different low-loss single- to multimode fiber coupler designs, each combining more than 5 kW of output power. The adiabatic mode evolution in the seven-fiber input bundle provides a brightness close to its theoretical maximum. The all-glass structures exhibit very low heat loads mainly due to small avoidable contamination, indicating room for improvement. To the best of our knowledge, regarding all-fiber geometrical combined power generation, beam quality and heat stability, the presented results had never been reported before.
Keywords :
Brightness; Couplers; Laser beams; Optical fiber couplers; Optical pulses; Beam combining; brightness; optical fiber couplers; optical fiber lasers;
fLanguage :
English
Journal_Title :
Lightwave Technology, Journal of
Publisher :
ieee
ISSN :
0733-8724
Type :
jour
DOI :
10.1109/JLT.2015.2457233
Filename :
7258439
Link To Document :
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