Tunable hyperbolic polaritons with plasmonic phase-change material In3SbTe2
Hyperbolic polaritons that originate from the extreme optical anisotropy in van der Waals (vdW) crystals have gained much attention for their potential in controlling nanolight. For practical use, there has been a strong interest to develop various manipulation strategies to customize the propagatio...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2024-02-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2023-0911 |
| _version_ | 1797246616110891008 |
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| author | Lu Dunzhu Zeng Ying Yan Qizhi Chen Qiyu Ma Weiliang Luo Xiao Xu Ming Yang Xiaosheng Li Peining |
| author_facet | Lu Dunzhu Zeng Ying Yan Qizhi Chen Qiyu Ma Weiliang Luo Xiao Xu Ming Yang Xiaosheng Li Peining |
| author_sort | Lu Dunzhu |
| collection | DOAJ |
| description | Hyperbolic polaritons that originate from the extreme optical anisotropy in van der Waals (vdW) crystals have gained much attention for their potential in controlling nanolight. For practical use, there has been a strong interest to develop various manipulation strategies to customize the propagation of hyperbolic polaritons on a deeply sub-diffractional scale. In this regard, phase-change materials (PCMs) that possess two phases with different refractive indices offer suitably a tunable dielectric environment. Here, we report on the tuning of hyperbolic phonon polaritons in natural vdW crystals, hexagonal boron nitride (hBN), and alpha-phase molybdenum trioxide (α-MoO3), using the plasmonic phase-change material In3SbTe2 (IST). Unlike conventional PCMs whose both phases are dielectric, IST features a metallic crystalline phase that is stable at room temperature. The coupling between polaritons with their mirror charges in the underneath crystalline IST triggers an even stronger field confinement for polaritons. Moreover, benefited from the metallicity of laser-writable crystalline IST, we show an all-optical material platform in which crystalline IST boundaries efficiently excite and focus hyperbolic phonon polaritons in α-MoO3. Our experiments highlight the possibility to obtain new degrees of freedom in polariton engineering with plasmonic PCMs, thereby expanding the toolkit of tunable nanophotonics with flexible, on-demand fabrication and reconfiguration capabilities. |
| first_indexed | 2024-04-24T19:45:38Z |
| format | Article |
| id | doaj.art-b4e5b7bc79d94b388df232172bc40994 |
| institution | Directory Open Access Journal |
| issn | 2192-8614 |
| language | English |
| last_indexed | 2024-04-24T19:45:38Z |
| publishDate | 2024-02-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-b4e5b7bc79d94b388df232172bc409942024-03-25T07:29:11ZengDe GruyterNanophotonics2192-86142024-02-0113693794410.1515/nanoph-2023-0911Tunable hyperbolic polaritons with plasmonic phase-change material In3SbTe2Lu Dunzhu0Zeng Ying1Yan Qizhi2Chen Qiyu3Ma Weiliang4Luo Xiao5Xu Ming6Yang Xiaosheng7Li Peining8Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan430074, ChinaSchool of Information Engineering, Wuhan University of Technology, Wuhan430070, ChinaWuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan430074, ChinaWuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan430074, ChinaWuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan430074, ChinaSchool of Integrated Circuits, Huazhong University of Science and Technology, Wuhan430074ChinaSchool of Integrated Circuits, Huazhong University of Science and Technology, Wuhan430074ChinaWuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan430074, ChinaWuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan430074, ChinaHyperbolic polaritons that originate from the extreme optical anisotropy in van der Waals (vdW) crystals have gained much attention for their potential in controlling nanolight. For practical use, there has been a strong interest to develop various manipulation strategies to customize the propagation of hyperbolic polaritons on a deeply sub-diffractional scale. In this regard, phase-change materials (PCMs) that possess two phases with different refractive indices offer suitably a tunable dielectric environment. Here, we report on the tuning of hyperbolic phonon polaritons in natural vdW crystals, hexagonal boron nitride (hBN), and alpha-phase molybdenum trioxide (α-MoO3), using the plasmonic phase-change material In3SbTe2 (IST). Unlike conventional PCMs whose both phases are dielectric, IST features a metallic crystalline phase that is stable at room temperature. The coupling between polaritons with their mirror charges in the underneath crystalline IST triggers an even stronger field confinement for polaritons. Moreover, benefited from the metallicity of laser-writable crystalline IST, we show an all-optical material platform in which crystalline IST boundaries efficiently excite and focus hyperbolic phonon polaritons in α-MoO3. Our experiments highlight the possibility to obtain new degrees of freedom in polariton engineering with plasmonic PCMs, thereby expanding the toolkit of tunable nanophotonics with flexible, on-demand fabrication and reconfiguration capabilities.https://doi.org/10.1515/nanoph-2023-0911hyperbolic polaritonsvan der waals materialsphase-change materialsin3sbte2 |
| spellingShingle | Lu Dunzhu Zeng Ying Yan Qizhi Chen Qiyu Ma Weiliang Luo Xiao Xu Ming Yang Xiaosheng Li Peining Tunable hyperbolic polaritons with plasmonic phase-change material In3SbTe2 Nanophotonics hyperbolic polaritons van der waals materials phase-change materials in3sbte2 |
| title | Tunable hyperbolic polaritons with plasmonic phase-change material In3SbTe2 |
| title_full | Tunable hyperbolic polaritons with plasmonic phase-change material In3SbTe2 |
| title_fullStr | Tunable hyperbolic polaritons with plasmonic phase-change material In3SbTe2 |
| title_full_unstemmed | Tunable hyperbolic polaritons with plasmonic phase-change material In3SbTe2 |
| title_short | Tunable hyperbolic polaritons with plasmonic phase-change material In3SbTe2 |
| title_sort | tunable hyperbolic polaritons with plasmonic phase change material in3sbte2 |
| topic | hyperbolic polaritons van der waals materials phase-change materials in3sbte2 |
| url | https://doi.org/10.1515/nanoph-2023-0911 |
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