Periodic interconversion evolution of a double-charge discrete vortex and out-of-phase quadrupole solitons in Lieb photonic lattices with self-focusing saturable nonlinearity media

Liu, Xiaoxu; Qin, Yali; Ji, Kailai; Hu, Yingtian; Ren, Hongliang; Zheng, Huan

doi:10.1016/j.optcom.2021.126905

Cited by 2 publications

(1 citation statement)

References 27 publications

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“…However, there are many open issues that remain to be explored. For example, the evolution of the SCV and doublecharged vortex (DCV) in square photonic lattices [37] and photonic moiré lattices [27] has been thoroughly studied. How do vortex beams (SCV and DCV) evolve in the repulsive defect moiré lattice?…”

Section: Transmission Characteristics Of the Oop Dipole Beamsmentioning

confidence: 99%

The evolution of the out-of-phase dipole beams in the repulsive defect photonic moiré lattice with saturable self-focusing nonlinearity media

Lu¹,

Qin²,

Zhou³

et al. 2023

Laser Phys.

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We demonstrate in a numerical manner the intriguing transmission of the out-of-phase (OOP) dipole beams in the repulsive defect photonic moiré lattice with rotation angle θ = arctan ( 3 / 4 ) and defect depth ε = − 0.5 under saturable self-focusing nonlinearity. Photonic moiré lattices, that are created by two mutually rotated square patterns with a relative rotation angle θ . We introduce a single-site repulsive defect in periodic photonic moiré lattices, and excite this site with the OOP dipole beams. We reveal that the OOP dipole beams undergoes two evolution stages during propagation, for the first time to our knowledge. It is shown that the OOP dipole beams maintain stable propagation over a certain distance in the first stage, which depends on the defect depth. Then the energy of the OOP dipole beams flows between its two spots, exhibiting periodic-like oscillation in the second stage, along with discussion about the effect of defect depth on the stable propagation distance of the OOP dipole beams, one finds that the stable propagation distance decreases linearly with increasing defect depth ε . At the same time, we perform a polynomial fit between the oscillation period of the OOP dipole beams and the defect depth ε . These two fitting curves fully demonstrate that the repulsive defect can profoundly affect the propagation behavior of the OOP dipole beams. Our results may provide novel insights into the localization and oscillation of beams in defect structures.

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Section: Transmission Characteristics Of the Oop Dipole Beamsmentioning

confidence: 99%

The evolution of the out-of-phase dipole beams in the repulsive defect photonic moiré lattice with saturable self-focusing nonlinearity media

Lu¹,

Qin²,

Zhou³

et al. 2023

Laser Phys.

Self Cite

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Advances in Photonic Crystal Research for Structural Color

Chen,

Wei,

Pan

et al. 2024

Adv Materials Technologies

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Structural color is a remarkable physical phenomenon that exists widely in nature. Unlike traditional color rendering methods, they are realized mainly through micro/nanostructures that interfere, diffract, scatter light, and exhibit long‐life and environmental‐friendly color effects. In nature, a few organisms use their color‐changing system to transmit information, such as courtship, warning, or disguise. Meanwhile, some natural inorganic minerals can also exhibit structural colors. Learning from nature, scientists have achieved large‐scale structural color design and manufacturing technology for artificial photonic crystals. Photonic crystals have a unique microstructure that forms a band gap under the action of the periodic potential field, consequently causing Bragg scattering due to the periodic arrangement of different refractive index media within them. Because of the apparent photonic band gap and the ability to form local photons at crystal defects, photonic crystals have been extensively studied in recent years and have broad application prospects in photonic fibers, optical computers, chips, and other fields. In this review, the research, properties, and applications of photonic crystals in recent years are presented, as well as insight into the future developments of photonic crystals.

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Periodic interconversion evolution of a double-charge discrete vortex and out-of-phase quadrupole solitons in Lieb photonic lattices with self-focusing saturable nonlinearity media

Cited by 2 publications

References 27 publications

The evolution of the out-of-phase dipole beams in the repulsive defect photonic moiré lattice with saturable self-focusing nonlinearity media

The evolution of the out-of-phase dipole beams in the repulsive defect photonic moiré lattice with saturable self-focusing nonlinearity media

Advances in Photonic Crystal Research for Structural Color

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