Optical Poling Reveals Hidden Molecular Restructuring in Multimode Fibers, Unlocking Ultra-Efficient Third-Order Nonlinearities

Maxime Jonard, Thomas Larqué, Dan-Esli Bouyou Bouyou +10

Optical poling is a well-established technique for inducing χ^{(2)} nonlinearity, yet its impact on silica's molecular structure remains unexplored. Here, we report the first dire…