RT Journal Article
T1 Ultrahigh-quality factor resonant dielectric metasurfaces based on hollow nanocuboids
A1 Algorri Genaro, José Francisco
A1 Zografopoulos, Dimitrios
A1 Ferraro, A.
A1 García Cámara, Braulio
A1 Beccherelli, R.
A1 Sánchez Pena, José Manuel
AB In this work, a dielectric metasurface consisting of hollow dielectric nanocuboids, with ultrahigh quality factor, is theoretically proposed and demonstrated. The variation of the hole size of the cuboid allows for the tuning of the resonant anapole mode in the nanoparticles. The metasurface is designed to operate in two complementary modes, namely electromagnetically induced transparency and narrowband selective reflection. Thanks to the non-radiative nature of the anapole resonances, the minimal absorption losses of the dielectric materials, and the near-field coupling among the metasurface nanoparticles, a very high quality factor of 𝑄=2.5×106 is achieved. The resonators are characterized by a simple bulk geometry and the subwavelength dimensions of the metasurface permit operation in the non-diffractive regime. The high quality factors and strong energy confinement of the proposed devices open new avenues of research on light-matter interactions, which may find direct applications, e.g., in non-linear devices, biological sensors, laser cavities, and optical communications.
PB Optical Society of America (OSA)
SN 1094-4087
YR 2019
FD 2019-03-04
LK https://hdl.handle.net/10016/33812
UL https://hdl.handle.net/10016/33812
LA eng
NO Research and Development Program through the Comunidad de Madrid (SINFOTON S2013/MIT-2790); Ministerio de Economia y Competitividad of Spain (TEC2013-47342-C2-2-R); mobility programs of Carlos III University and "Jose Castillejo" of the Ministerio de Educacion, Cultura y Deporte of Spain.
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RD 27 jul. 2024