Visible supercontinuum generation controlled by intermodal four-wave mixing in microstructured fiber.
We present an experimental and numerical study of supercontinuum generation extended in the visible part of the spectrum by using a selective optical coupling of the pump wave in the largely anomalous dispersion regime. The broadband frequency generation is induced by an initial four-wave mixing process that converts the pump wave at 1064 nm into 831 nm anti-Stokes and 1478 nm Stokes wavelengths. Phase matching is ensured on such a large frequency shift thanks to a microstructured multimodal fiber with a specific design. Continuum generation is therefore enhanced around the two generated sidebands.
XLIM Institut de Recherche-UMR CNRS Université de Limoges, No. 6172, Faculté des Sciences et Techniques, 123 Avenue A. Thomas, F-87060 Limoges Cedex, France.
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C
Lesvigne
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V
Couderc
A
A
Tonello
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P
Leproux
A
A
Barthélémy
S
S
Lacroix
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F
Druon
P
P
Blandin
M
M
Hanna
P
P
Georges