Nano-Focusing of Vortex Beams with Hyperbolic Metamaterials
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arXiv
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| Autori principali: | , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
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| _version_ | 1866929377362575360 |
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| author | Li, Wenhao LaMountain, Jacob Simmons, Evan Clabeau, Anthony Bekele, Robel Y. Myers, Jason D. Omatsu, Takashige Frantz, Jesse Podolskiy, Viktor A. Litchinitser, Natalia M. |
| author_facet | Li, Wenhao LaMountain, Jacob Simmons, Evan Clabeau, Anthony Bekele, Robel Y. Myers, Jason D. Omatsu, Takashige Frantz, Jesse Podolskiy, Viktor A. Litchinitser, Natalia M. |
| contents | The synergy of judiciously engineered nanostructures and complex topology of light creates unprecedented opportunities for tailoring light-matter interactions on the nanoscale. Electromagnetic waves can carry multiple units of angular momentum per photon, stemming from both spin and orbital angular momentum contributions, offering a potential route for modifying the optical transition selection rules. However, the size difference between a vortex beam and quantum objects limits the interaction strength and the angular momentum exchange. Here, we demonstrate the sub-diffraction-limited focusing of a vortex beam using the high in-plane wave number modes present in hyperbolic metamaterials. The spin-orbit interaction within the hyperbolic structure gives rise to the formation of an optical skyrmion with a deep subwavelength structure, which may enable the exploration of new light-matter interaction phenomena. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_05016 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Nano-Focusing of Vortex Beams with Hyperbolic Metamaterials Li, Wenhao LaMountain, Jacob Simmons, Evan Clabeau, Anthony Bekele, Robel Y. Myers, Jason D. Omatsu, Takashige Frantz, Jesse Podolskiy, Viktor A. Litchinitser, Natalia M. Optics The synergy of judiciously engineered nanostructures and complex topology of light creates unprecedented opportunities for tailoring light-matter interactions on the nanoscale. Electromagnetic waves can carry multiple units of angular momentum per photon, stemming from both spin and orbital angular momentum contributions, offering a potential route for modifying the optical transition selection rules. However, the size difference between a vortex beam and quantum objects limits the interaction strength and the angular momentum exchange. Here, we demonstrate the sub-diffraction-limited focusing of a vortex beam using the high in-plane wave number modes present in hyperbolic metamaterials. The spin-orbit interaction within the hyperbolic structure gives rise to the formation of an optical skyrmion with a deep subwavelength structure, which may enable the exploration of new light-matter interaction phenomena. |
| title | Nano-Focusing of Vortex Beams with Hyperbolic Metamaterials |
| topic | Optics |
| url | https://arxiv.org/abs/2406.05016 |