Observation of Linear and Nonlinear Light Trapping on Topological Dislocations

Ivanov, S.K.; Kireev, A.V.; Sabour, K.; Kostyuchenko, N.S.; Zhuravitski, S.A.; Skryabin, N.N.; Dyakonov, I.V.; Kalinkin, A.A.; Kompanets, V.O.; Kulik, S.P.; Chekalin, S.V.; Ferrando, A.; Zadkov, V.N.; Kartashov, Y.V.

Авторы: Ivanov S.K., Kireev A.V., Sabour K., Kostyuchenko N.S., Zhuravitski S.A., Skryabin N.N., Dyakonov I.V., Kalinkin A.A., Kompanets V.O., Kulik S.P., Chekalin S.V., Ferrando A., Zadkov V.N., Kartashov Y.V.
Журнал: Laser and Photonics Reviews
Год издания: 2025
Издательство: Wiley - VCH Verlag GmbH & CO. KGaA
Местоположение издательства: Germany
Номер статьи: 202502543R1
DOI: 10.1002/lpor.202502543
Аннотация: Topological dislocations in otherwise periodic lattices represent global structural defects that typically leave the lattice periodicity intact far from the dislocation. Such dislocations arise in diverse systems ranging from crystalline solids, acoustic and photonic lattices to matter waves in optical lattices. Dislocations drastically affect the evolution of wave excitations in their vicinity, enabling novel trapping mechanisms at topological defects. Moreover, when combined with nonlinearity, such systems support new types of self-sustained states of topological origin. Here we demonstrate experimentally, for the first time at optical frequencies, the waveguiding at various types of topological edge dislocations resulting in the formation of localized photonic eigenstates with distinct and tunable shapes. Using femtosecond laser-writing techniques, we fabricated waveguide arrays with precisely tailored dislocation parameters, enabling full control over the degree of localization and internal mode structure. We further demonstrate both theoretically and experimentally that in the high-power regime, the families of thresholdless dislocation solitons bifurcate from such modes, inheriting the shape diversity of their linear counterparts. Our results reveal a nontrivial interplay between nonlinearity and topological lattice deformations and establish dislocation solitons as a new class of nonlinear topological states, potentially enabling novel types of interaction scenarios for excitations in nonlinear physical systems with controllable global deformations.
Добавил в систему: Кулик Сергей Павлович

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Observation of Linear and Nonlinear Light Trapping on Topological Dislocationsстатья

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