Amber rainbow ribbon effect in broadband optical metamaterials

Jing Zhao (), Xianfeng Wu, Doudou Zhang, Xiaoting Xu, Xiaonong Wang and Xiaopeng Zhao ()
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Jing Zhao: Medtronic Plc
Xianfeng Wu: Northwestern Polytechnical University
Doudou Zhang: Northwestern Polytechnical University
Xiaoting Xu: Northwestern Polytechnical University
Xiaonong Wang: Northwestern Polytechnical University
Xiaopeng Zhao: Northwestern Polytechnical University

Nature Communications, 2024, vol. 15, issue 1, 1-14

Abstract: Abstract Using the trapped rainbow effect to slow down or even stop light has been widely studied. However, high loss and energy leakage severely limited the development of rainbow devices. Here, we observed the negative Goos-Hänchen effect in film samples across the entire visible spectrum. We also discovered an amber rainbow ribbon and an optical black hole due to perfect back reflection in optical waveguides, where little light leaks out. Not only does the amber rainbow ribbon effect show an automatic frequency selection response, as predicted by single frequency theoretical models and confirmed by experiments, it also shows spatial periodic regulation, resulting from broadband omnidirectional visible metamaterials prepared by disordered assembly systems. This broadband light trapping system could play a crucial role in the fields of optical storage and information processing when being used to construct ultra-compact modulators and other tunable devices.

Date: 2024
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DOI: 10.1038/s41467-024-46914-4

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