@inproceedings{e0558a66b5d84bdeb6cc15d2df864969,
title = "Broadband all-dielectric meta-devices for visible perfect vortex beams generation",
abstract = "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.",
keywords = "all-dielectric meta-devices, nondiffracting perfect vortex beams, visible wavelengths",
author = "Shafqat, {M. Danial} and Nasir Mahmood and Yehia Massoud",
note = "Publisher Copyright: {\textcopyright} 2023 SPIE.; Holography, Diffractive Optics, and Applications XIII 2023 ; Conference date: 14-10-2023 Through 16-10-2023",
year = "2023",
doi = "10.1117/12.2687638",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Changhe Zhou and Ting-Chung Poon and Liangcai Cao and Hiroshi Yoshikawa",
booktitle = "Holography, Diffractive Optics, and Applications XIII",
address = "United States",
}