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Observation of bound states in the continuum embedded in symmetry bandgaps.
Cerjan, Alexander; Jörg, Christina; Vaidya, Sachin; Augustine, Shyam; Benalcazar, Wladimir A; Hsu, Chia Wei; von Freymann, Georg; Rechtsman, Mikael C.
Afiliación
  • Cerjan A; Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.
  • Jörg C; Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, NM 87185, USA.
  • Vaidya S; Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.
  • Augustine S; Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.
  • Benalcazar WA; Physics Department and Research Center OPTIMAS, University of Kaiserslautern, D-67663 Kaiserslautern, Germany.
  • Hsu CW; Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA.
  • von Freymann G; Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA.
  • Rechtsman MC; Physics Department and Research Center OPTIMAS, University of Kaiserslautern, D-67663 Kaiserslautern, Germany.
Sci Adv ; 7(52): eabk1117, 2021 Dec 24.
Article en En | MEDLINE | ID: mdl-34936454
In the past decade, symmetry-protected bound states in the continuum (BICs) have proven to be an important design principle for creating and enhancing devices reliant upon states with high-quality (Q) factors, such as sensors, lasers, and those for harmonic generation. However, as we show, current implementations of symmetry-protected BICs in photonic crystal slabs can only be found at the center of the Brillouin zone and below the Bragg diffraction limit, which fundamentally restricts their use to single-frequency applications. By microprinting a three-dimensional (3D) photonic crystal structure using two-photon polymerization, we demonstrate that this limitation can be overcome by altering the radiative environment surrounding the slab to be a 3D photonic crystal. This allows for the protection of a line of BICs by embedding it in a symmetry bandgap of the crystal. This concept substantially expands the design freedom available for developing next-generation devices with high-Q states.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Adv Año: 2021 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Adv Año: 2021 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos