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Active control of anapole states by structuring the phase-change alloy Ge2Sb2Te5
Open accessAbstract
High-index dielectric nanoparticles supporting a distinct series of Mie resonances have enabled a new class of optical antennas with unprecedented functionalities. The great wealth of multipolar responses has not only brought in new physical insight but also spurred practical applications. However, how to make such a colorful resonance palette actively tunable is still elusive. Here, we demonstrate that the structured phase-change alloy Ge 2 Sb 2 Te 5 (GST) can support a diverse set of multipolar Mie resonances with active tunability. By harnessing the dramatic optical contrast of GST, we realize broadband (Δ λ/λ ~ 15%) mode shifting between an electric dipole resonance and an anapole state. Active control of higher-order anapoles and multimodal tuning are also investigated, which make the structured GST serve as a multispectral optical switch with high extinction contrasts (>6 dB). With all these findings, our study provides a new direction for realizing active nanophotonic devices.
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Beiträge zur Optik trüber Medien, speziell kolloidaler Metallösungen
Mie, G. (1908) · Annalen der Physik · doi:10.1002/andp.19083300302 · Cited by 11,537
Cited by
Active metamaterials and metadevices: a review
Xiao, S., Wang, T., Liu, T., Zhou, C., Jiang, X., & Zhang, J. (2020) · Journal of Physics D: Applied Physics · doi:10.1088/1361-6463/abaced · Cited by 429
Resonant leaky modes in all-dielectric metasystems: Fundamentals and applications
Huang, L., Xu, L., Powell, D. A., Padilla, W. J., & Miroshnichenko, A. E. (2023) · Physics Reports · doi:10.1016/j.physrep.2023.01.001 · Cited by 328
Recent Advances in Tunable Metasurfaces: Materials, Design, and Applications
Abdelraouf, O. A. M., Wang, Z., Liu, H., Dong, Z., Wang, Q., Ye, M., Wang, X. R., Wang, Q. J., & Liu, H. (2022) · ACS Nano · doi:10.1021/acsnano.2c04628 · Cited by 265
Metadata
- Authors
- Tian, J., Luo, H., Yang, Y., Ding, F., Qu, Y., Zhao, D., Qiu, M., & Bozhevolnyi, S. I.
- Venue
- Nature Communications
- Published
- 2019-01-23
- Volume
- 10
- Issue
- 1
- Pages
- 396-396
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W2914328039
- Cited by
- 242
- References
- 1
- FWCI
- 10.61
- Type
- journal article
- Language
- en
- Open access
- gold
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- Tian, J., Luo, H., Yang, Y., Ding, F., Qu, Y., Zhao, D., Qiu, M., & Bozhevolnyi, S. I. (2019). Active control of anapole states by structuring the phase-change alloy Ge2Sb2Te5. Nature Communications. https://doi.org/10.1038/s41467-018-08057-1
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