Dual-mode polarization-sensitive tunable metalens enabling bright-field and edge-enhanced imaging

Aqib Raza Shah; Isma Javed; Azhar Javed Satti; Qammer H. Abbasi; Muhammad Zubair; Muhammad Qasim Mehmood

doi:10.1117/12.3022143

24 June 2024 Dual-mode polarization-sensitive tunable metalens enabling bright-field and edge-enhanced imaging

Aqib Raza Shah, Isma Javed, Azhar Javed Satti, Qammer H. Abbasi, Muhammad Zubair, Muhammad Qasim Mehmood

Proceedings Volume 13020, Advances in Optical Thin Films VIII; 1302014 (2024) https://doi.org/10.1117/12.3022143
Event: SPIE Optical Systems Design, 2024, Strasbourg, France

Conference Poster

Abstract

Metalenses exhibit significant potential in various fields due to their ability to access comprehensive, complex information. The ability to integrate multiple features into a single device, along with its compact and efficient design, allows for the creation of miniature microscopy systems that showcase remarkable performance. By applying unique design techniques, we have developed and implemented polarization-dependent metalens. This metalens makes smooth transitions between edge enhancement imaging and bright field imaging possible. Employing the principles of geometric phase, we design a dual mode metalens by using hydrogenated amorphous silicon to physically manifest the necessary phase profiles for operation in the visible spectrum. These profiles contain a conventional hyperbolic configuration intended for bright-field imaging, along with spiral metalens with a topological charge of +1, tailored for edge-enhanced imaging functions. When utilizing Left Circular Polarization (LCP), our designed lens enables bright field imaging. Conversely, Right Circular Polarization (RCP) facilitates image edge enhancement. We showcase through numerical demonstration the metalens capability to focus and generate vortices under various states of circular polarization and validate its potential for diverse applications.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Aqib Raza Shah, Isma Javed, Azhar Javed Satti, Qammer H. Abbasi, Muhammad Zubair, and Muhammad Qasim Mehmood "Dual-mode polarization-sensitive tunable metalens enabling bright-field and edge-enhanced imaging", Proc. SPIE 13020, Advances in Optical Thin Films VIII, 1302014 (24 June 2024); https://doi.org/10.1117/12.3022143

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