We posit that inconsistent interpretations of experimental data have led to inaccurate claims on metalens focusing efficiencies. By performing a meta-analysis, we show that extraordinary claims of high focusing efficiency at high numerical apertures are, unfortunately, not yet backed by rigorous simulation or experimental results.
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Acknowledgements
Support from grants N6560-NV-ONR and NASA NNL16AA05C are gratefully acknowledged. We thank H. Smith, H. Li and O. Miller for fruitful discussions.
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R.M. has financial interest in Oblate Optics, Inc., which is commercializing flat lenses.
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Nature Photonics thanks Uriel Levy and the other, anonymous, reviewer(s) for their contribution to the peer review of this work.
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Menon, R., Sensale-Rodriguez, B. Inconsistencies of metalens performance and comparison with conventional diffractive optics. Nat. Photon. 17, 923–924 (2023). https://doi.org/10.1038/s41566-023-01306-w
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DOI: https://doi.org/10.1038/s41566-023-01306-w
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