22 April 2016 Laser surface texturization for high power cladding light stripper
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Abstract
We demonstrated herein a new type of cladding light strippers suitable for high power systems. By precisely micro-machining the surface of the fiber we create CLS with efficiencies as high as 97 % for large NA, multi-mode, cladding light (NA = 0.3), and 70 % for single-mode, low NA, light. The NA of the cladding light is reduced from 0.3 down to 0.08. The CLS exhibit a 1°C/stripped-Watt temperature elevation making them very suitable for high power applications. This fabrication method is simple and reliable. We have tested different texturization geometries on several different fibers: 20/400 from Nufern, KAGOME, and LMA 10 and LMA 15 fibers (results not shown herein) and we observed good efficiencies and temperature elevation behavior for all of them. Finally, large scale production of CLS with this method is possible since the time necessary to prepare on CLS is very small, in the order of few seconds.
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Michael Berisset, Michael Berisset, Léo Lebrun, Léo Lebrun, Marc Faucon, Marc Faucon, Rainer Kling, Rainer Kling, Johan Boullet, Johan Boullet, Claude Aguergaray, Claude Aguergaray, "Laser surface texturization for high power cladding light stripper", Proc. SPIE 9730, Components and Packaging for Laser Systems II, 973014 (22 April 2016); doi: 10.1117/12.2213270; https://doi.org/10.1117/12.2213270
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