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. 2022 Oct 30;22(21):8319. doi: 10.3390/s22218319

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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(a) Fabricated GRIN Metasurface Lens. (b) Experiment setup using homodyne imaging system. (c) Measured field distribution with lens. (d) Measured field distribution without lens. (e) Normalized measured field at focal plane.

(a) Fabricated GRIN Metasurface Lens. (b) Experiment setup using homodyne imaging system. (c) Measured field distribution with lens. (d) Measured field distribution without lens. (e) Normalized measured field at focal plane.