Probing the Band Structure of Topological Silicon Photonic Lattices in the Visible Spectrum
Abstract
We study two-dimensional hexagonal photonic lattices of silicon Mie resonators with a topological optical band structure in the visible spectral range. We use 30 keV electrons focused to nanoscale spots to map the local optical density of states in topological photonic lattices with deeply subwavelength resolution. By slightly shrinking or expanding the unit cell, we form hexagonal superstructures and observe the opening of a band gap and a splitting of the double-degenerate Dirac cones, which correspond to topologically trivial and nontrivial phases. Optical transmission spectroscopy shows evidence of topological edge states at the domain walls between topological and trivial lattices.
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The band structure related to Dirac cones has been widely investigated in the energy-momentum space using bulk measurement with measured density and dispersion pattern.
“The band structure related to Dirac cones has been widely investigated in the energy-momentum space using the bulk measurement with measured density and dispersion pattern [10, 22-25].”
From Observing movement of Dirac cones from single-photon dynamics (2021) · cites this paper as [25]
Cites
Photonic Floquet topological insulators
Rechtsman, M. C., Zeuner, J. M., Plotnik, Y., Lumer, Y., Podolsky, D., Dreisow, F., Nolte, S., Segev, M., & Szameit, A. (2013) · Nature · doi:10.1038/nature12066 · Cited by 3,332 · see citing works
Experimental observation of Weyl points
Lu, L., Wang, Z., Ye, D., Ran, L., Fu, L., Joannopoulos, J. D., & Soljačić, M. (2015) · Science · doi:10.1126/science.aaa9273 · Cited by 1,067 · see citing works
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Observing movement of Dirac cones from single-photon dynamics
Lu, Y.-H., Wang, Y., Chang, Y.-J., Li, Z.-M., Cui, W.-H., Gao, J., Zhou, W.-H., Zheng, H., & Jin, X.-M. (2021) · Physical Review B · doi:10.1103/physrevb.103.064304 · Cited by 7 · see citing works
“The band structure related to Dirac cones has been widely investigated in the energy-momentum space using the bulk measurement with measured density and dispersion pattern [10, 22–25].”
BackgroundMethodInfluential
- Authors
- Peng, S., Schilder, N. J., Ni, X., van de Groep, J., Brongersma, M. L., Alù, A., Khanikaev, A. B., Atwater, H. A., & Polman, A.
- Affiliations
- California Institute of Technology (US)
- Institute for Atomic and Molecular Physics (NL)
- The Graduate Center, CUNY (US)
- Stanford University (US)
- ORCID
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2019-03-21
- Volume
- 122
- Issue
- 11
- Pages
- 117401-117401
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2923324733
- Cited by
- 119
- References
- 2
- Citations by year
- 2026: 10 · 2025: 8 · 2024: 8 · 2023: 19 · 2022: 19 · 2021: 19 · 2020: 25 · 2019: 9 · 2018: 2
- FWCI
- 7.93
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- CaltechAUTHORS (California Institute of Technology) (submittedVersion)
- OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
- Funders
- U.S. Department of Energy (DE-FG02-07ER46405)
- Air Force Office of Scientific Research (FA9550-16-1-0019)
- National Science Foundation (DMR-1809915, EFRI-1641069)
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek
- MURI (FA9550-17-1-0002)
- European Research Counsel (SCEON 695343)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Topological Materials and Phenomena
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Photonic Crystals and Applications
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Metamaterials and Metasurfaces Applications
- Keywords
- optical band structure, topological edge states, band gap opening, optical density of states, electron beam lithography, domain walls, visible light
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