102 citations · 1.1k across the 41 of their papers we have counts for
20 papers · 1 filter
Anisotropic Babinet-invertible metasurfaces to realize transmission-reflection switching for orthogonal polarizations of light
Yosuke Nakata, Yoshiro Urade, Kunio Okimura +4
The electromagnetic properties of an extremely thin metallic checkerboard drastically change from resonant reflection (transmission) to resonant transmission (reflection) when the…
Broadband and energy-concentrating terahertz coherent perfect absorber based on a self-complementary metasurface
Yoshiro Urade, Yosuke Nakata, Toshihiro Nakanishi +1
We demonstrate that a self-complementary checkerboard-like metasurface works as a broadband coherent perfect absorber (CPA) when symmetrically illuminated by two counter-propagatin…
Supersymmetric correspondence in spectra on a graph and its line graph: From circuit theory to spoof plasmons on metallic lattices
Yosuke Nakata, Yoshiro Urade, Toshihiro Nakanishi +3
We investigate the supersymmetry (SUSY) structures for inductor-capacitor circuit networks on a simple regular graph and its line graph. We show that their eigenspectra must coinci…
Classical realization of dispersion-canceled, artifact-free, and background-free optical coherence tomography
Kazuhisa Ogawa, Masao Kitano
Quantum-optical coherence tomography (Q-OCT) provides a dispersion-canceled axial-imaging method, but its practical use is limited by the weakness of the light source and by artifa…
Observation of a nonradiative flat band for spoof surface plasmons in a metallic Lieb lattice
Sho Kajiwara, Yoshiro Urade, Yosuke Nakata +2
We demonstrate a nonradiative flat band for spoof surface plasmon polaritons bounded on a structured surface with Lieb lattice symmetry in the terahertz regime. First, we theoretic…
Dynamically Babinet-invertible metasurface: a capacitive-inductive reconfigurable filter for terahertz waves using vanadium-dioxide metal-insulator transition
Yoshiro Urade, Yosuke Nakata, Kunio Okimura +4
This paper proposes a reconfigurable planar metamaterial that can be switched between capacitive and inductive responses using local changes in the electrical conductivity of its c…