Article Dans Une Revue Applied Physics B - Laser and Optics Année : 2023

UV 20W-class single-mode nanosecond pulse delivery using a vacuum-free/ambient air inhibited-coupling hollow-core fiber

Florian Leroi
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Julien Didierjean
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Julien Saby
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Johan Boullet
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Résumé

Silica fibers have been successfully used to deliver high-power high-energy laser beam in the near-infrared and visible range but suffer from high absorption and color-center formation in the UV spectrum which disqualify them for such wavelength. Recently, the advances of inhibited-coupling hollow-core photonic crystal fibers have made them an unique tool to transport UV radiation thanks to an ultralow overlap with the silica cladding and record losses down to 10 dB/km. By further optimizing such fiber, we report in this letter a record single-mode delivery of 23.3 W (155 μJ) with 92% transmission from a 343 nm, 10 ns, 150 kHz laser source, corresponding to an improvement of the current state-of-the-art by two orders of magnitude. * Frédéric Gérôme

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Dates et versions

hal-04141807 , version 1 (26-06-2023)

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Florian Leroi, Frédéric Gérôme, Julien Didierjean, Julien Saby, Fetah Benabid, et al.. UV 20W-class single-mode nanosecond pulse delivery using a vacuum-free/ambient air inhibited-coupling hollow-core fiber. Applied Physics B - Laser and Optics, 2023, 129 (7), pp.116. ⟨10.1007/s00340-023-08037-4⟩. ⟨hal-04141807⟩
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