Zero focusing via competing nonlinearities in beta-barium-borate crystals
Résumé
We investigate nonlinear focusing behavior of light beams propagating in beta-barium-borate (BBO) crystals under mismatched second-harmonic generation. We clearly identify experimentally multiple self-focusing and defocusing regions against the orientation angle, and the condition where competing quadratic and cubic nonlinearities perfectly compensate each other (zero-focusing point).
Origine | Fichiers produits par l'(les) auteur(s) |
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