Observation of triangular-lattice pattern in nonlinear wave mixing with optical vortices

B. Pinheiro da Silva; G. H. dos Santos; A. G. de Oliveira; N. Rubiano da Silva; W. T. Buono; R. M. Gomes; W. C. Soares; A. J. Jesus-Silva; E. J. S. Fonseca; P. H. Souto Ribeiro; A. Z. Khoury

arXiv · 2206.06153

Observation of triangular-lattice pattern in nonlinear wave mixing with optical vortices

B. Pinheiro da Silva·G. H. dos Santos·A. G. de Oliveira·N. Rubiano da Silva·W. T. Buono·R. M. Gomes·W. C. Soares·A. J. Jesus-Silva·E. J. S. Fonseca·P. H. Souto Ribeiro·A. Z. Khoury

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Abstract

A triangular-lattice pattern is observed in light beams resulting from the spatial cross modulation between an optical vortex and a triangular shaped beam undergoing parametric interaction. Both up- and down-conversion processes are investigated, and the far-field image of the converted beam exhibits a triangular lattice. The number of sites and the lattice orientation are determined by the topological charge of the vortex beam. In the down-conversion process, the lattice orientation can also be affected by phase conjugation. The observed cross modulation works for a large variety of spatial field structures, and could replace solid-state devices at wavelengths where they are not yet available.

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B. Pinheiro da Silva, G. H. dos Santos, A. G. de Oliveira, N. Rubiano da Silva, W. T. Buono, R. M. Gomes, W. C. Soares, A. J. Jesus-Silva, E. J. S. Fonseca, P. H. Souto Ribeiro, A. Z. Khoury. 2022-06-13. Observation of triangular-lattice pattern in nonlinear wave mixing with optical vortices. https://arxiv.org/abs/2206.06153

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