Generalized metric for broadband flat lens performance comparison.

ABSTRACT: A plethora of metalenses and diffractive lenses ("flat lenses") have been demonstrated over the years. Recently, attempts have been made to stretch their performance envelope, particularly in the direction of wide-band achromatic performance. While achromatic behavior has been demonstrated, showing an actual improvement in imaging performance relative to conventional (non-chromatically corrected) flat lenses has remained a major challenge. The reasons for this are use of inappropriate performance metrics, lack of comparison to a baseline conventional design, and lack of a performance metric that combines signal-to-noise ratio and resolution. An additional problem is that different published flat lens designs use different first order parameters, so they cannot be compared. In this work we

SUBMITTER: Engelberg J 

PROVIDER: S-EPMC11502021 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature