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19 May 2010 Multicore fibers for high-brilliance laser beam delivery
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Abstract
A passive few-mode multicore fiber consisting of 7 coupled cores is investigated. The fiber is compared to a largemode- area step-index fiber, with the same number of modes and a similar mode field area. Based on the 7-core fiber results a single transverse mode multicore fiber, with a mode field area of 465 μm2 at 1050 nm, delivering virtually diffraction limited output beam quality is demonstrated. Stimulated Raman threshold measurements are presented and a fundamental mode high-power beam transport with more than 350 W is shown.
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Moritz M. Vogel, Thomas Rataj, Armin Austerschulte, Andreas Popp, Marwan Abdou-Ahmed, Thomas Liebig, Andreas Voss, and Thomas Graf "Multicore fibers for high-brilliance laser beam delivery", Proc. SPIE 7721, Solid State Lasers and Amplifiers IV, and High-Power Lasers, 772104 (19 May 2010); https://doi.org/10.1117/12.854528
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