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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2410.04806 |
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| _version_ | 1866916425259548672 |
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| author | Choi, Yu Sung Lee, Ki Young An, Soo-Chan Jang, Minchul Kim, Youngjae Shin, Seung Han Yoon, Jae Woong |
| author_facet | Choi, Yu Sung Lee, Ki Young An, Soo-Chan Jang, Minchul Kim, Youngjae Shin, Seung Han Yoon, Jae Woong |
| contents | Beam shaping in nanophotonic systems remains a challenge due to the reliance on complex heuristic optimization procedures. In this work, we experimentally demonstrate a novel approach to topological beam shaping using Jackiw-Rebbi states in metasurfaces. By fabricating thin-film dielectric structures with engineered Dirac-mass distributions, we create domain walls that allow precise control over beam profiles. We observe the emergence of Jackiw-Rebbi states and confirm their localized characteristics. Notably, we achieve a flat-top beam profile by carefully tailoring the Dirac mass distribution, highlighting the potential of this method for customized beam shaping. This experimental realization establishes our approach as a new mechanism for beam control, rooted in topological physics, and offers an efficient strategy for nanophotonic design. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_04806 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Topological beaming of light: Proof-of-concept experiment Choi, Yu Sung Lee, Ki Young An, Soo-Chan Jang, Minchul Kim, Youngjae Shin, Seung Han Yoon, Jae Woong Optics Beam shaping in nanophotonic systems remains a challenge due to the reliance on complex heuristic optimization procedures. In this work, we experimentally demonstrate a novel approach to topological beam shaping using Jackiw-Rebbi states in metasurfaces. By fabricating thin-film dielectric structures with engineered Dirac-mass distributions, we create domain walls that allow precise control over beam profiles. We observe the emergence of Jackiw-Rebbi states and confirm their localized characteristics. Notably, we achieve a flat-top beam profile by carefully tailoring the Dirac mass distribution, highlighting the potential of this method for customized beam shaping. This experimental realization establishes our approach as a new mechanism for beam control, rooted in topological physics, and offers an efficient strategy for nanophotonic design. |
| title | Topological beaming of light: Proof-of-concept experiment |
| topic | Optics |
| url | https://arxiv.org/abs/2410.04806 |