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arXiv · 1907.00026

Fine-tuning of orbital angular momentum in an optical parametric oscillator

R. F. Barros·G. B. Alves·D. S. Tasca·C. E. R. Souza·A. Z. Khoury
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Abstract

We investigate the dynamical properties of a type-II optical parametric oscillator pumped by a structured light beam carrying orbital angular momentum. Different dynamical regimes are theoretically derived and experimentally demonstrated, depending on the anisotropy effects imposed by the nonlinear medium. In a weakly anisotropic regime, fine-tuning of the orbital angular momentum transfer is obtained by adjusting the crystal parameters. Under strong anisotropy, orbital angular momentum transfer is not possible and a sharp dynamical behavior is observed, with abrupt switching between different transverse modes.

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R. F. Barros, G. B. Alves, D. S. Tasca, C. E. R. Souza, A. Z. Khoury. 2019-06-28. Fine-tuning of orbital angular momentum in an optical parametric oscillator. https://doi.org/10.1088/1361-6455%2Fab4cc8

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