Observation of spatially structured Montgomery effect in free space
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866912657237344256 |
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| author | Yessenov, Murat Sacchi, Luca Palmieri, Alfonso Hall, Layton A. Abouraddy, Ayman F. Capasso, Federico |
| author_facet | Yessenov, Murat Sacchi, Luca Palmieri, Alfonso Hall, Layton A. Abouraddy, Ayman F. Capasso, Federico |
| contents | We report the first direct observation of the spatially structured Montgomery effect, a lensless self-imaging phenomenon that generalizes the Talbot effect to aperiodic structures, unfolding repeated tightly focused spots (~10 $μ$m) in free space. Using a dynamic optical hologram to discretize radial spatial frequencies, we demonstrate self-imaging at distances ranging from 30 to 100 mm. Our method independently controls the focal spot size and self-imaging period, enabling dynamic three-dimensional light patterns. We also show the arbitrary tunability of the transverse profile by demonstrating revivals of Laguerre-Gaussian, Hermite-Gaussian, Ince-Gaussian modes, and Airy beams. These findings open opportunities for multi-plane microscopy, optical atom traps, and quantum atomic systems. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2510_16269 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Observation of spatially structured Montgomery effect in free space Yessenov, Murat Sacchi, Luca Palmieri, Alfonso Hall, Layton A. Abouraddy, Ayman F. Capasso, Federico Optics We report the first direct observation of the spatially structured Montgomery effect, a lensless self-imaging phenomenon that generalizes the Talbot effect to aperiodic structures, unfolding repeated tightly focused spots (~10 $μ$m) in free space. Using a dynamic optical hologram to discretize radial spatial frequencies, we demonstrate self-imaging at distances ranging from 30 to 100 mm. Our method independently controls the focal spot size and self-imaging period, enabling dynamic three-dimensional light patterns. We also show the arbitrary tunability of the transverse profile by demonstrating revivals of Laguerre-Gaussian, Hermite-Gaussian, Ince-Gaussian modes, and Airy beams. These findings open opportunities for multi-plane microscopy, optical atom traps, and quantum atomic systems. |
| title | Observation of spatially structured Montgomery effect in free space |
| topic | Optics |
| url | https://arxiv.org/abs/2510.16269 |