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arXiv · 2410.04806

Topological beaming of light: Proof-of-concept experiment

Yu Sung Choi·Ki Young Lee·Soo-Chan An·Minchul Jang·Youngjae Kim·Seung Han Shin·Jae Woong Yoon
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Abstract

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.

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Yu Sung Choi, Ki Young Lee, Soo-Chan An, Minchul Jang, Youngjae Kim, Seung Han Shin, Jae Woong Yoon. 2024-10-07. Topological beaming of light: Proof-of-concept experiment. https://arxiv.org/abs/2410.04806

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