High-quality ultraviolet beam generation in multimode photonic crystal fiber through nondegenerate four-wave mixing at 532 nm

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, produ...

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Bibliographic Details
Published in:Optics letters 2015-05, Vol.40 (10), p.2389-2392
Main Authors: Sévigny, Benoit, Cassez, Andy, Vanvincq, Olivier, Quiquempois, Yves, Bouwmans, Géraud
Format: Article
Language:English
Subjects:
Optical Fibers
Optical Phenomena
Photons
Ultraviolet Rays
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Summary: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.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.40.002389