Quantitative phase gradient microscopy and other imaging techniques using metasurfaces

Andrei Faraon; Hyounghan Kwon; MohammandSadegh Faraji-Dana

doi:10.1117/12.2582744

5 March 2021 Quantitative phase gradient microscopy and other imaging techniques using metasurfaces

Andrei Faraon, Hyounghan Kwon, MohammandSadegh Faraji-Dana

Proceedings Volume 11653, Quantitative Phase Imaging VII; 1165305 (2021) https://doi.org/10.1117/12.2582744
Event: SPIE BiOS, 2021, Online Only

Abstract

Optical metasurfaces enable control of the phase, polarization and amplitude of optical wavefronts with high spatial resolution that can be difficult to achieve via other means. This opens the possibility of developing new imaging devices that provide various advantages in terms of size and multi-functionality compared to conventional optical systems. One such modality is quantitative phase imaging, that enable label-free imaging of transparent bio-samples. Miniaturization of these imaging systems will extend their potentials in biomedical and diagnostic applications. We demonstrate a novel quantitative phase gradient microscope using two multifunctional metasurface layers that retrieves a quantitative phase gradient image in a single shot with low noise levels and single cell resolution. Besides quantitative phase imaging, I will discuss other imaging applications for dielectric metasurfaces, including hyperspectral imaging.

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Andrei Faraon, Hyounghan Kwon, and MohammandSadegh Faraji-Dana "Quantitative phase gradient microscopy and other imaging techniques using metasurfaces", Proc. SPIE 11653, Quantitative Phase Imaging VII, 1165305 (5 March 2021); https://doi.org/10.1117/12.2582744

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KEYWORDS

Microscopy

Phase imaging

Dielectrics

Hyperspectral imaging

Image resolution

Imaging devices

Imaging systems

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