Broadband all-dielectric meta-devices for visible perfect vortex beams generation

M. Danial Shafqat, Nasir Mahmood, Yehia Massoud

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


Conventional optical elements are typically designed for a specific wavelength and have limited functionality, hindering their practical applications and integration with on-chip devices. Recently developed artificially engineered structures overcome this constraint but at the cost of added design complexity. Here, we present broadband single-layered metadevices capable of integrating multiple functionalities that generate nondiffracting perfect vortex beams for visible wavelengths (475 to 650 nm). To realize highly efficient all-dielectric meta-devices, zinc sulfide material is exploited due to its large transparent window with a sufficiently high refractive index in the visible regime. The nondiffracting response provides a significantly long propagation distance without abrupt divergence. Moreover, shorter optical wavelengths provide more data bandwidth when mixed with a high topological charge (n = 8) of the perfect vortex beam, which paved the path towards the realization of numerous applications such as optical tweezing, quantum information processing, and optical communication.

Original languageEnglish (US)
Title of host publicationHolography, Diffractive Optics, and Applications XIII
EditorsChanghe Zhou, Ting-Chung Poon, Liangcai Cao, Hiroshi Yoshikawa
ISBN (Electronic)9781510667853
StatePublished - 2023
EventHolography, Diffractive Optics, and Applications XIII 2023 - Beijing, China
Duration: Oct 14 2023Oct 16 2023

Publication series

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


ConferenceHolography, Diffractive Optics, and Applications XIII 2023

Bibliographical note

Publisher Copyright:
© 2023 SPIE.


  • all-dielectric meta-devices
  • nondiffracting perfect vortex beams
  • visible wavelengths

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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