Beyond Moire with Spatial Frequency Mastery via δ-Function Expansion Metasurface.

ABSTRACT: Mastering spatial frequency manipulation within momentum space is pivotal yet challenging, particularly in mitigating moiré patterns that significantly impair image quality across diverse applications. Conventional methods often require trade-offs in spatial resolution or fall short of completely eradicating unwanted frequencies, further burdened by complex post-processing demands. In this work, a novel coherent δ-function expansion technique implemented through an all-silicon metasurface, affording unparalleled synergistic control over arbitrarily selected spatial frequencies via refined k-space amplitude and phase modulations is introduced. This approach transcends traditional global methods by harnessing a sophisticated ensemble of multiple δ-functions, enabling a holistic manipulation

SUBMITTER: Chen R 

PROVIDER: S-EPMC11653613 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature