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3D multiphoton characterization of χ(2) nonlinearity induced in a multimode fiber through optical poling

Maxime Jonard,Yann Leventoux,Maggy Colas,Sébastien Février,Tigran Mansuryan,Julie Cornette,Alessandro Tonello,Katarzyna Krupa,Jean-René Duclère,Claire Lefort

Conference on Lasers and Electro-Optics（2022）

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Abstract
We characterize the 3D spatial distribution of the quadratic susceptibility in an optically poled graded-index multimode fiber in presence of spatial beam self-cleaning. We also show how the poling process can improve the beam self-cleaning.
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Key words
3D multiphoton characterization,optical poling,3D spatial distribution,quadratic susceptibility,graded-index multimode fiber,spatial beam self-cleaning,poling process
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