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arXiv · 1808.10398

Phase conjugation and mode conversion in stimulated parametric down-conversion with orbital angular momentum: a geometrical interpretation

André G. de Oliveira·Marcelo F. Z. Arruda·Willamys C. Soares·Stephen P. Walborn·Antonio Z. Khoury·Antonio Kanaan·Paulo H. Souto Ribeiro·Renné Medeiros de Araújo
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Abstract

We report on an experiment that investigates the spatial mode conversion in the process of parametric down-conversion seeded by a light beam in a superposition of orbital angular momentum modes. This process is interpreted in terms of a geometric representation of first-order spatial modes in a Poincaré sphere, providing an intuitive image of the phase conjugation and the topological charge conservation. We also make a comparison with the analogous phenomenon for optical parametric oscillators.

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André G. de Oliveira, Marcelo F. Z. Arruda, Willamys C. Soares, Stephen P. Walborn, Antonio Z. Khoury, Antonio Kanaan, Paulo H. Souto Ribeiro, Renné Medeiros de Araújo. 2018-08-30. Phase conjugation and mode conversion in stimulated parametric down-conversion with orbital angular momentum: a geometrical interpretation. https://doi.org/10.1007/s13538-018-0614-4

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