Affiliation:
1. Laser Zentrum Hannover e.V.
2. Cluster of Excellence QuantumFrontiers
3. nLight Oy
4. nLIGHT Inc.
5. Institut für Produktentwicklung und Gerätebau
Abstract
We report on the development of a side-fused signal-pump combiner with an integrated feed-through 34/250-µm chirally coupled core fiber. The manufacturing process involves a novel rotationally symmetrical cladding restructuring using a CO2-laser beam. The signal-pump combiner exhibits the pump-to-signal fiber coupling efficiency of 90%, signal-to-pump isolation of 30 dB, and is high-power tested at a pump input power of >500 W. Additionally, a signal feed-through loss of 0.23 dB is measured and the S2-method is used to confirm non-degradation of the spatial modes. The side-fused combiner technique has the advantage of an uninterrupted signal core and can be used in co- and counter-pumped configurations.
Funder
Max-Planck-Institute for Gravitational Physics
Deutsche Forschungsgemeinschaft
Subject
Atomic and Molecular Physics, and Optics
Cited by
1 articles.
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