Inconsistencies of metalens performance and comparison with conventional diffractive optics

TL;DR

This paper critically examines the claimed high efficiencies of metalenses, revealing that many such claims lack rigorous validation and highlighting the need for more accurate experimental and simulation data.

Contribution

It provides a meta-analysis exposing inconsistencies in reported metalens efficiencies and offers corrected data and interpretations to improve future research accuracy.

Findings

Many high-efficiency claims are unsubstantiated by rigorous data

Meta-analysis reveals discrepancies in reported metalens performance

Revised data correct previous errors in efficiency claims

Abstract

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. In this document, we have included the original comment and supplement, as well as the revised versions that correct the errors found in the original.