Light propagation in disordered aperiodic Mathieu lattices generated with two different  randomization methods

Jadranka M. Vasiljević; Dejan V. Timotijević; Dragana M. Jović Savić

doi:10.1117/12.2621228

25 May 2022 Light propagation in disordered aperiodic Mathieu lattices generated with two different randomization methods

Jadranka M. Vasiljević, Dejan V. Timotijević, Dragana M. Jović Savić

Author Affiliations +

Proceedings Volume 12143, Nonlinear Optics and its Applications 2022; 121430A (2022) https://doi.org/10.1117/12.2621228
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

We present the numerical modeling of two different randomization methods of two-dimensional aperiodic photonic lattices based on Mathieu beams, optically induced in a photorefractive media. We numerically study light propagation in such lattices. For both methods, we compare light transport and localization in such lattices along the propagation and for various disorder strengths. For all disorder strengths, a disorder-enhanced light transport is observed. With increasing disorder strength light transport becomes diffusive-like while with further increase of disorder strength, the Anderson localization is observed. For longer propagation distances this transition is more pronounced. The influence of input lattice intensity on the localization effects is studied. We observe more pronounced localization for one of the methods, and different diffraction and localization along different directions, due to the crystal and lattice anisotropy. The difference in light transport and localization between two randomization methods is attributed to various levels of input lattice intensity.

Conference Presentation

Citation Download Citation

Jadranka M. Vasiljević, Dejan V. Timotijević, and Dragana M. Jović Savić "Light propagation in disordered aperiodic Mathieu lattices generated with two different randomization methods", Proc. SPIE 12143, Nonlinear Optics and its Applications 2022, 121430A (25 May 2022); https://doi.org/10.1117/12.2621228

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