All-dielectric Trifunctional Metadevices to Efficiently Structure Ultraviolet Light

Nasir Mahmood, Yehia Massoud*

*Corresponding author for this work

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

3 Scopus citations


Manipulating electromagnetic waves by controlling their amplitude, phase, and polarization is essential for implementing numerous exciting applications and consumer-level devices. However, conventional optical elements acquire phase accumulation through the propagation effect, which results in bulky optical devices and thus hinders their further miniaturization. In recent years, the remarkable development of nanofabrication technologies enabled the emergence of artificially engineered ultrathin structures called metasurfaces that provide a fascinating boulevard to tailor the field distribution of electromagnetic waves at the micron scale. Metasurfaces are ultrathin optical components with an array of low-loss, precisely engineered building blocks that exhibit the unprecedented capability of manipulating electromagnetic waves. However, the ever-growing demand for miniaturized multifunctional optical devices requires the design and implementation of ultra-compact devices capable of integrating multiple functionalities into a single structure. Here, in this work, we proposed a single-layered all-dielectric multifunctional metadevice capable of controlling the wavefront of the incident light and exhibiting multiple optical phenomena in the ultraviolet domain. The presented meta-device exploits the spin-decoupling technique and interleaves the propagating and Pancharatnam-Barry (PB) phases to encode the multiple functionalities in it. Our meta-device consists of a super-cell having rectangular nanoantennas of silicon nitride (Si3N4) material arranged on a sapphire (Al2O3) substrate. The proposed meta-device generates three focused spots at the specified focal plane but at different positions by impinging the linearly polarized light. The presented design technique may provide an exciting roadmap toward developing and implementing multifunctional meta-devices, which will find several applications in medicine, communication, and integrated photonics.

Original languageEnglish (US)
Title of host publicationNanophotonics, Micro/Nano Optics, and Plasmonics VIII
EditorsZhiping Zhou, Kazumi Wada, Limin Tong
ISBN (Electronic)9781510657106
StatePublished - 2022
EventNanophotonics, Micro/Nano Optics, and Plasmonics VIII 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


ConferenceNanophotonics, Micro/Nano Optics, and Plasmonics VIII 2022
CityVirtual, Online

Bibliographical note

Publisher Copyright:
© 2022 SPIE.


  • All-dielectric
  • Meta-device
  • Multifunctional
  • Silicon Nitride
  • Spin-decoupling
  • Ultraviolet

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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