Large depth of focus plasmonic metalenses based on Fresnel biprism

Plasmonic metalenses are optical elements that are able to shape the amplitude and the phase of light with a high spatial resolution, standing as promising elements for new low-weight imaging technologies. A desired characteristic for metalenses is to have an extended depth of focus (DOF) to bring a...

Full description

Saved in:
Bibliographic Details
Published inAIP advances Vol. 10; no. 4; pp. 045025 - 045025-6
Main Authors Inclán Ladino, Adriana, Mendoza-Hernández, Job, Arroyo-Carrasco, Maximino Luis, Salas-Montiel, Rafael, García-Méndez, Manuel, Coello, Victor, Tellez-Limon, Ricardo
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 01.04.2020
American Institute of Physics- AIP Publishing LLC
AIP Publishing LLC
Subjects
Blurring
Depth of field
Directivity
Engineering Sciences
Focusing
Integral equations
Microscopes
Optical components
Optics
Photonic
Spatial resolution
Transmission efficiency
Online AccessGet full text

Cover

More Information
Summary:Plasmonic metalenses are optical elements that are able to shape the amplitude and the phase of light with a high spatial resolution, standing as promising elements for new low-weight imaging technologies. A desired characteristic for metalenses is to have an extended depth of focus (DOF) to bring a larger tolerance of placement of the image plane, reducing image blurring and increasing light directivity. Based on the Fresnel biprism and using the integral equation method, we numerically demonstrate light focusing with cylindrical plasmonic metalenses that are able to generate large DOF values of up to 150λ with transmission efficiencies around 50%. The easiness in the design of our plasmonic metalenses represents an advantage in terms of fabrication, opening new possibilities for the development of small-size lenses for light focusing and imaging applications.
ISSN:2158-3226
2158-3226
DOI:10.1063/5.0004208