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https://doi.org/10.1364/OE.398182
Title: | Strong hyperbolic-magnetic polaritons coupling in an hBN/Ag-grating heterostructure | Authors: | Hu, J. Xie, W. Chen, J. Zhou, L. Liu, W. Li, D. Zhan, Q. |
Issue Date: | 2020 | Publisher: | OSA - The Optical Society | Citation: | Hu, J., Xie, W., Chen, J., Zhou, L., Liu, W., Li, D., Zhan, Q. (2020). Strong hyperbolic-magnetic polaritons coupling in an hBN/Ag-grating heterostructure. Optics Express 28 (15) : 22095-22104. ScholarBank@NUS Repository. https://doi.org/10.1364/OE.398182 | Abstract: | Strong coupling between hyperbolic phonon-polaritons (HP) and magnetic polaritons (MP) is theoretically studied in a hexagonal boron nitride (hBN) covered deep silver grating structure. It is found that MP in grating trenches strongly interacts with HP in an anisotropic hBN thin film, leading to a large Rabi splitting with near-perfect dual band light absorption. Numerical results indicate that MP-HP coupling can be tuned by geometric parameters of the structure. More intriguingly, the resonantly enhanced fields for two branches of the hybrid mode demonstrate unusually different field patterns. One exhibits a volume-confined Zigzag propagation pattern in the hBN film, while the other shows a field-localization near the grating corners. Furthermore, resonance frequencies of these strongly coupled modes are very robust over a wide-angle range. The angle-insensitive strong interaction of hyperbolic-magnetic polaritons with dual band intense light absorption in this hybrid system offers a new paradigm for the development of various optical detecting, sensing and thermal emitting devices. � 2020 Optical Society of America. | Source Title: | Optics Express | URI: | https://scholarbank.nus.edu.sg/handle/10635/197674 | ISSN: | 10944087 | DOI: | 10.1364/OE.398182 |
Appears in Collections: | Elements Staff Publications |
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