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Complex-amplitude metasurface-based orbital angular momentum holography in momentum space.
Ren, Haoran; Fang, Xinyuan; Jang, Jaehyuck; Bürger, Johannes; Rho, Junsuk; Maier, Stefan A.
Afiliación
  • Ren H; Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, München, Germany. Haoran.Ren@physik.uni-muenchen.de.
  • Fang X; Centre for Artificial-Intelligence Nanophotonics, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, China.
  • Jang J; Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea.
  • Bürger J; Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, München, Germany.
  • Rho J; Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea. jsrho@postech.ac.kr.
  • Maier SA; Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea. jsrho@postech.ac.kr.
Nat Nanotechnol ; 15(11): 948-955, 2020 Nov.
Article en En | MEDLINE | ID: mdl-32958936
Digital optical holograms can achieve nanometre-scale resolution as a result of recent advances in metasurface technologies. This has raised hopes for applications in data encryption, data storage, information processing and displays. However, the hologram bandwidth has remained too low for any practical use. To overcome this limitation, information can be stored in the orbital angular momentum of light, as this degree of freedom has an unbounded set of orthogonal helical modes that could function as information channels. Thus far, orbital angular momentum holography has been achieved using phase-only metasurfaces, which, however, are marred by channel crosstalk. As a result, multiplex information from only four channels has been demonstrated. Here, we demonstrate an orbital angular momentum holography technology that is capable of multiplexing up to 200 independent orbital angular momentum channels. This has been achieved by designing a complex-amplitude metasurface in momentum space capable of complete and independent amplitude and phase manipulation. Information was then extracted by Fourier transform using different orbital angular momentum modes of light, allowing lensless reconstruction and holographic videos to be displayed. Our metasurface can be three-dimensionally printed in a polymer matrix on SiO2 for large-area fabrication.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Nanotechnol Año: 2020 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Nanotechnol Año: 2020 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Reino Unido