Journal
OPTICS LETTERS
Volume 40, Issue 10, Pages 2389-2392Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.40.002389
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Funding
- French Ministry of Higher Education and Research
- Nord-Pas de Calais Regional Council
- Fonds Europeen de Developpement Economique Regional through the Contrat de Projets Etat Region (CPER) Campus Intelligence Ambiante
- Labex CEMPI [ANR-11-LABX-0007]
- Equipex FLUX through the Programme Investissements d'Avenir [ANR-11-EQPX-0017]
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All-fiber ultraviolet (UV) light sources are of great practical interest for a multitude of applications spanned across different sectors, from industrial processes such as nonthermal, high-resolution materials processing, to biomedical applications such as eye surgery, to name a few. However, production of UV light sources with high beam quality has been a problem to this day as the fiber designs required to reach UV wavelengths by four-wave mixing with widely available pumps (i.e., 532 nm) are challenging because of their small size and increased risk of material damage. In this Letter, a specific pumping scheme is presented that allows the conversion of two pump photons in different modes to UV light in the fundamental mode and the corresponding idler in a higher order mode. The process has also been shown to work experimentally, and UV light at 390.5 nm in the fundamental mode was successfully generated. (C) 2015 Optical Society of America
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