Fabrication of an antiresonant hollow-core fibre for mid-infrared nonlinear Raman conversion in nitrogen pumped at 2μm
Bogas-Droy A, Dalloz N, Bigotta S, Piotrowski M, Hildenbrand-Dhollande A, Frosz MH, Joly N (2025)
Publication Language: English
Publication Type: Conference contribution
Publication year: 2025
Journal
Publisher: SPIE
Series: Proceedings of SPIE
City/Town: Bellingham, WA
Book Volume: 13522
Pages Range: 1352211
Conference Proceedings Title: Eighth International Workshop on Specialty Optical Fibers and Their Applications (WSOF 2025)
Event location: Prague
ISBN: 9781510688407
DOI: 10.1117/12.3058764
Abstract
We report the fabrication of an antiresonant silica hollow-core fibre (HCF) specially designed as a platform for emission at 4 μm via stimulated Raman scattering (SRS) in nitrogen gas (N2) when pumped at 2.06 μm. The fabrication was realised using a two-step stack, fuse and draw process. The HCF microstructure is composed of six non-touching nested capillaries (attached in each corner of a hexagonal jacket) surrounding a 70 μm diameter core. The HCF propagation losses measured at 2 and 4 μm wavelength are below 0.3 dB/m, and the light is propagating in the core with reasonably good beam quality at both wavelengths. A high power 2.06 μm laser source, delivering 25 ns pulses with energy up to 6 mJ, was coupled to the fibre in a free-space configuration. When filled with air at atmospheric pressure, the HCF showed remarkably high damage threshold, being able to transmit more than 35 W of pump power without damage. However, when filled with high pressure N2, the fibre was damaged at lower power. We show evidences suggesting that laser-induced optical breakdown of the gas is responsible for damages observed.
Authors with CRIS profile
Achille Bogas-Droy
Professur für Experimentalphysik (Photonik)
Nicolas Joly
Professur für Experimentalphysik (Photonik)
Involved external institutions
Deutsch-Französisches Forschungsinstitut Saint-Louis / French-German Research Institute of Saint-Louis / Institut Franco-Allemand de Recherches de Saint-Louis
France (FR)
Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light
Germany (DE)
France (FR)
Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light
Germany (DE)
How to cite
APA:
Bogas-Droy, A., Dalloz, N., Bigotta, S., Piotrowski, M., Hildenbrand-Dhollande, A., Frosz, M.H., & Joly, N. (2025). Fabrication of an antiresonant hollow-core fibre for mid-infrared nonlinear Raman conversion in nitrogen pumped at 2μm. In Pavel Peterka, Kyriacos Kalli, John Ballato, Alexis Mendez (Eds.), Eighth International Workshop on Specialty Optical Fibers and Their Applications (WSOF 2025) (pp. 1352211). Prague, CZ: Bellingham, WA: SPIE.
MLA:
Bogas-Droy, Achille, et al. "Fabrication of an antiresonant hollow-core fibre for mid-infrared nonlinear Raman conversion in nitrogen pumped at 2μm." Proceedings of the 8th International Workshop on Specialty Optical Fibers and Their Applications, WSOF 2025, Prague Ed. Pavel Peterka, Kyriacos Kalli, John Ballato, Alexis Mendez, Bellingham, WA: SPIE, 2025. 1352211.
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