Electro-optic modulation using lithium niobate metasurfaces with topological corner state
Sign Up to like & getrecommendations! Published in 2023 at "Applied Physics Letters"
DOI: 10.1063/5.0145316
Abstract: Electro-optically (EO) tunable metasurfaces have received considerable attention owing to their capability for dynamic light field control. Here, we report an EO lithium niobate metasurface mediated by topological corner states. Such a supercell of metasurface… read more here.
Keywords: electro optic; modulation; lithium niobate; topological corner ... See more keywords
Topological Corner Modes Induced by Dirac Vortices in Arbitrary Geometry.
Sign Up to like & getrecommendations! Published in 2021 at "Physical review letters"
DOI: 10.1103/physrevlett.126.226802
Abstract: Recently, higher-order topologies have been experimentally realized, featuring topological corner modes (TCMs) between adjacent topologically distinct domains. However, they have to comply with specific spatial symmetries of underlying lattices, hence their TCMs only emerge in… read more here.
Keywords: corner modes; geometry; dirac vortices; topological corner ... See more keywords
Second harmonic generation enhancement and directional emission from topological corner state based on the quantum spin Hall effect.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.432660
Abstract: Topological corner state has attracted much research interests since it does not obey the conventional bulk-edge correspondence and enables tightly confined light within small volumes. In this work, we demonstrate an enhanced second harmonic generation… read more here.
Keywords: corner state; second harmonic; corner; topological corner ... See more keywords
Collective topological corner modes in all-dielectric photonic crystal supercell arrays.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.453556
Abstract: In this Letter, we propose collective topological corner modes in all-dielectric photonic crystal (PhC) supercell arrays, where each supercell is a second-order topological insulator. We show that coupled multipole corner modes are embedded in surrounding… read more here.
Keywords: modes dielectric; topological corner; collective topological; corner modes ... See more keywords
Second harmonic generation by matching the phase distributions of topological corner and edge states.
Sign Up to like & getrecommendations! Published in 2023 at "Optics letters"
DOI: 10.1364/ol.489194
Abstract: Second harmonic generation (SHG) in topological photonic crystals is chiefly concerned with frequency conversion between the same topological states. However, little attention has been paid to the effect of coupling between different topological states on… read more here.
Keywords: second harmonic; phase distributions; matching phase; harmonic generation ... See more keywords
Topological Corner Modes in Graphene-Coated Nanowire Waveguide
Sign Up to like & getrecommendations! Published in 2020 at "Applied Sciences"
DOI: 10.3390/app10114027
Abstract: We study the plasmonic second-order topological modes in nanowire waveguides which are covered by monolayer graphene. The waveguide arrays are arranged in the kagome lattice. In a triangle-shaped lattice, the topological modes are localized at… read more here.
Keywords: topological corner; corner modes; coated nanowire; modes graphene ... See more keywords