Multi-core fibers are a technology currently at the forefront of research due to the increasing need for efficient transport of high-power continuous and pulsed laser beams [1]. Power scaling is gained by propagating independent beams through spatial multiplexing in different cores to avoid thermal instability issues [2], shifting the traditional trade-off involved in enlarging the mode area while preserving single-mode operation. Phase difference compensation between the various beams is achieved by a piezo mirror system, and experimental results show that onset of multi-modality in heated cores is one of the main causes of efficiency reduction [2].
Phasing and guidance properties of multi-core fibers under heat load / Rosa, L.; Mckee, S.; Molardi, C.; Poli, F.; Selleri, S.; Vincetti, L.; Cucinotta, A.. - 2019:(2019). (Intervento presentato al convegno The European Conference on Lasers and Electro-Optics, CLEO_Europe_2019 tenutosi a deu nel 2019).
Phasing and guidance properties of multi-core fibers under heat load
Rosa L.;Selleri S.;Vincetti L.;
2019
Abstract
Multi-core fibers are a technology currently at the forefront of research due to the increasing need for efficient transport of high-power continuous and pulsed laser beams [1]. Power scaling is gained by propagating independent beams through spatial multiplexing in different cores to avoid thermal instability issues [2], shifting the traditional trade-off involved in enlarging the mode area while preserving single-mode operation. Phase difference compensation between the various beams is achieved by a piezo mirror system, and experimental results show that onset of multi-modality in heated cores is one of the main causes of efficiency reduction [2].
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