Abstract
We report a record low-loss 2.7-4.7 μm guiding hollow-core fiber and its use to deliver high-beam-quality pulses over 118-m-length at 3.12 to 3.57 µm with a maximum 56mW (0.47kW) average (peak) power at 3.25 µm.
© 2022 The Author(s)
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