Broadband multifunctional achromatic metalens

Isma Javed; Azhar Javed Satti; Muhammad Ashar Naveed; Muhammad Zubair; Muhammad Qasim Mehmood; Yehia Massoud

doi:10.1117/12.2687595

28 November 2023 Broadband multifunctional achromatic metalens

Isma Javed, Azhar Javed Satti, Muhammad Ashar Naveed, Muhammad Zubair, Muhammad Qasim Mehmood, Yehia Massoud

Proceedings Volume 12773, Nanophotonics and Micro/Nano Optics IX; 127731H (2023) https://doi.org/10.1117/12.2687595
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Conference Poster

Abstract

Metasurfaces offer novel design capability of optical wavefront shaping to realize ultra-compact flat optical components which have remarkable potential to mitigate the constraints of size and design complexities in imaging systems. However, aberration correction and diffraction-limited response over the broad spectrum greatly hindered their applicability because of simultaneous phase engineering at multiple wavelengths on a single metasurface interface. Conventionally reported design methodologies overcome the challenges mentioned earlier by exploiting resonance tuning, layer stacking, and phase mergence strategies. They suppressed the aberration effect with high efficiency but have complex design and meta-atom geometry with limited functionalities. Here in this research script, we have introduced broadband achromatic bifocal metalens based on a single-layer array of nano-rectangular bars in transmission mode. In order to have wavelength-independent focusing, we developed a library of meta-atoms to provide required phase compensations. In addition to this, a novel material zinc selenide (ZnSe) is introduced as a constituent which is a large transparent window in the optical regime. The high efficiency and unprecedented capability of aberration correction along with multi-functionality make the proposed metalens a potential candidate for next-generation advanced imaging technology.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Isma Javed, Azhar Javed Satti, Muhammad Ashar Naveed, Muhammad Zubair, Muhammad Qasim Mehmood, and Yehia Massoud "Broadband multifunctional achromatic metalens", Proc. SPIE 12773, Nanophotonics and Micro/Nano Optics IX, 127731H (28 November 2023); https://doi.org/10.1117/12.2687595

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available