TY - GEN
T1 - Stable Light Focusing by Meta-Axicons Applicable in Biosensors, Particle Trapping, Astronomical, and Imaging Devices
AU - Hashemi, Mahdieh
AU - Reddy, Andra Naresh Kumar
AU - Alibakhshikenari, Mohammad
AU - Falcone, Francisco
AU - Denidni, Tayeb A.
AU - Limiti, Ernesto
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/12/8
Y1 - 2020/12/8
N2 - Axicons with the ability to convert Gaussian beams into non-diffracting Bessel beams are well-known in the field of light focusing for their large depth-of-focus. In this paper, we investigate light focusing quality of the meta-axicons in the presence of a turbulent medium in the focusing space like water and opaque obstacles in front of the axicon. We apply the required phase and amplitude profile of the axicon to a planar arrangement of meta-atoms. Dielectric c-shaped meta-atoms are designed to cover all transmitted phase and amplitude values at a wavelength of λ = 700 nm. We show that meta-axicon's focusing parameters like its depth of focus (DOF) and its subwavelength lateral full width at half maximum (FWHM) are not affected by the presence of the turbulence in the focusing area. This effect makes meta-axicons as a promising focusing device in biosensors, telescopes, particle trapping, and imaging applications.
AB - Axicons with the ability to convert Gaussian beams into non-diffracting Bessel beams are well-known in the field of light focusing for their large depth-of-focus. In this paper, we investigate light focusing quality of the meta-axicons in the presence of a turbulent medium in the focusing space like water and opaque obstacles in front of the axicon. We apply the required phase and amplitude profile of the axicon to a planar arrangement of meta-atoms. Dielectric c-shaped meta-atoms are designed to cover all transmitted phase and amplitude values at a wavelength of λ = 700 nm. We show that meta-axicon's focusing parameters like its depth of focus (DOF) and its subwavelength lateral full width at half maximum (FWHM) are not affected by the presence of the turbulence in the focusing area. This effect makes meta-axicons as a promising focusing device in biosensors, telescopes, particle trapping, and imaging applications.
KW - Axicon
KW - bessel beams
KW - depth-of-focus (DOF)
KW - full width at half maximum (FWHM)
KW - metasurfaces
KW - self-healing
UR - https://www.scopus.com/pages/publications/85100736010
U2 - 10.1109/APMC47863.2020.9331386
DO - 10.1109/APMC47863.2020.9331386
M3 - Conference Publication
AN - SCOPUS:85100736010
T3 - Asia-Pacific Microwave Conference Proceedings, APMC
SP - 354
EP - 356
BT - 2020 Asia-Pacific Microwave Conference, APMC 2020 - Proceeding
A2 - Sun, Jie
A2 - Yu, Wai Ho
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2020 Asia-Pacific Microwave Conference, APMC 2020
Y2 - 8 December 2020 through 11 December 2020
ER -