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10 February 2011 Global sensitivity analyses of coherent beam combining of fiber amplifier arrays by the use of numerical space filling designs
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Abstract
We perform sensitivity analyses on two different array configurations of coherently combined fiber amplifiers to study the impact of residual phase errors onto the combining efficiency. The arrays studied are: a square of 16 fibers and a hexagon of 19 fibers. For the hexagon, two different shaped wavefronts are studied. In this method a global analysisis performed: we modify simultaneously all the phase errors using numerical space filling designs. Then, the construction of a metamodel makes it possible to investigate more precisely the role of each fiber and specially the role of interactions between fibers onto the combination with less runs than classical approaches. Results exhibit different behaviors and specially interactions between fibers with respect to the array configurations and with respect to the two different shaped wavefronts. Finally, we demonstrate that we can study arrays of more than 100 fibers.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Adrian Azarian, Olivier Vasseur, Baya Bennaï, Laurent Lombard, Guillaume Canat, Véronique Jolivet, Yves Jaouën, and Pierre Bourdon "Global sensitivity analyses of coherent beam combining of fiber amplifier arrays by the use of numerical space filling designs", Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 79141G (10 February 2011); https://doi.org/10.1117/12.874727
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