Spatiotemporal Moiré lattice light fields
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| Опубликовано в:: | Nanophotonics vol. 14, no. 6 (2025), p. 707 |
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| Главный автор: | |
| Другие авторы: | , , , , , |
| Опубликовано: |
Walter de Gruyter GmbH
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| Предметы: | |
| Online-ссылка: | Citation/Abstract Full Text - PDF |
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| Краткий обзор: | Joint space-time modulation of light fields has recently garnered intense attention for enabling precise control over both spatial and temporal characteristics of light, leading to the creation of space-time beams with unique properties, such as diffraction-free propagation and transverse orbital angular momentum. Here, we theoretically propose and experimentally demonstrate spatiotemporal Moiré lattice light fields by controlling the discrete rotational symmetry of a pulse’s spatiotemporal spectrum. Using a 4f pulse shaper and an x − ω modulation strategy, we generate tunable spatiotemporal Moiré patterns with varying sublattice sizes and confirm their diffraction-free behavior in time-averaged intensities. Additionally, we demonstrate spatiotemporal Moiré lattices carrying transverse orbital angular momentum. These findings provide a novel platform for studying spatiotemporal light–matter interactions and may open new possibilities for applications in other wave-based systems, such as acoustics and electron waves. |
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| ISSN: | 2192-8606 2192-8614 |
| DOI: | 10.1515/nanoph-2024-0562 |
| Источник: | Advanced Technologies & Aerospace Database |