Independent multichannel wavefront modulation for angle and polarization multiplexing through planar metasurfaces

Sabiha Latif, Nasir Mahmood, Muhammad Qasim Mehmood, Yehia Massoud*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


The rapidly growing demand for miniaturized multifunctional devices and systems constantly brings new structural challenges to the research community. The planar metamaterials (metasurfaces) provide a revolutionary way for wavefront manipulation of electromagnetic waves and promise the achievement of superior degrees of freedom. Compared to conventional refractive optical elements, a distinct advantage of metasurfaces can be accomplished by embedding multifunctionality through encoding various sets of information into a single metasurface. Herein, we proposed a unique angle multiplexing strategy that provides wavefront modulation independently in a flat metasurface by controlling the incidence angle of the input light. The fundamental unit cell of the meta-platform of the proposed structure includes a rectangular tetrad with distinct structural geometry. Due to the proposed geometry's geometrical characteristics, the angle multiplexed phenomena are induced in the structure by the mutual coupling of tetrads made of hydrogenated amorphous silicon (a-Si:H). For the proposed metasurface, we exploited the meta-platform comprised of two Meta-atoms, one for positive incidence angle and another for negative incidence angle of light. To increase the applicability of the metasurface, we proposed a single multifunctional meta-device that will project the image of one information for one angle while another information for the opposite angle of the input light. The angle multiplexing phenomena designed for a wavelength can open promising avenues for real-time applications in switchable multifunctional devices, holography, information encryption, and security purposes.

Original languageEnglish (US)
Title of host publicationHolography, Diffractive Optics, and Applications XII
EditorsChanghe Zhou, Ting-Chung Poon, Liangcai Cao, Hiroshi Yoshikawa
ISBN (Electronic)9781510657021
StatePublished - 2022
EventHolography, Diffractive Optics, and Applications XII 2022 - Virtual, Online, China
Duration: Dec 5 2022Dec 11 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceHolography, Diffractive Optics, and Applications XII 2022
CityVirtual, Online


  • Angle multiplexed
  • Hydrogenated amorphous silicon
  • Incident angle
  • Meta-hologram
  • Multifunction
  • Negative incidence angle
  • Positive incidence angle
  • Tetrad

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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