1 kW average power emission from an in-house 4x4 multicore rod-type fiber
Klenke A, Steinkopff A, Aleshire C, Jauregui C, Kuhn S, Nold J, Haarlammert N, Schreiber T, Tuennermann A, Limpert J (2021)
Publication Type: Conference contribution
Publication year: 2021
Publisher: Institute of Electrical and Electronics Engineers Inc.
Conference Proceedings Title: 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
Event location: Munich, DEU
ISBN: 9781665418768
DOI: 10.1109/CLEO/Europe-EQEC52157.2021.9541953
Abstract
Multicore fibers have the potential to combine the advantages of optical fibers (such as their high average power capability, high efficiency and well-defined beam quality) with those stemming from the large beam areas commonly used in other laser architectures. Coherent combination can then be employed to achieve one single, high-quality, output beam [1] , [2]. To match and even surpass the performance of state-of-the-art lasers systems comprising multiple separate fiber amplifiers, multicore fibers need to leverage the same technological advancements. One example is the use of a rod-type geometry with large core diameters to mitigate detrimental nonlinear effects. In this contribution, we present our high power laser results achieved with an in-house, all-glass, rod-type multicore fiber, whose basic structure is shown in figure 1. The fiber contains 16 ytterbium-doped cores in a rectangular arrangement with a diameter of 22m each, operating at near single-mode output. The core-to-core pitch is 58m. An embedded octagonal fluoride ring is used as the guiding mechanism for the pump with a diameter of 310m and a NA of 0.22. A device length of 1.1 m was chosen to provide sufficient pump absorption.
Involved external institutions
Friedrich-Schiller-Universität Jena
Germany (DE)
Fraunhofer-Institut für Angewandte Optik und Feinmechanik (IOF) / Fraunhofer Institute for Applied Optics and Precision Engineering
Germany (DE)
Germany (DE)
Fraunhofer-Institut für Angewandte Optik und Feinmechanik (IOF) / Fraunhofer Institute for Applied Optics and Precision Engineering
Germany (DE)
How to cite
APA:
Klenke, A., Steinkopff, A., Aleshire, C., Jauregui, C., Kuhn, S., Nold, J.,... Limpert, J. (2021). 1 kW average power emission from an in-house 4x4 multicore rod-type fiber. In 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021. Munich, DEU: Institute of Electrical and Electronics Engineers Inc..
MLA:
Klenke, Arno, et al. "1 kW average power emission from an in-house 4x4 multicore rod-type fiber." Proceedings of the 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021, Munich, DEU Institute of Electrical and Electronics Engineers Inc., 2021.
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