- Letter
- Open Access
Experimental realization of supergrowing fields
Phys. Rev. Research 6, L032043 – Published 27 August, 2024
DOI: https://doi.org/10.1103/PhysRevResearch.6.L032043
Abstract
Supergrowth refers to the local amplitude growth rate of a signal being faster than its fastest Fourier mode. In contrast, superoscillation pertains to the variation of the phase. Compared to the latter, supergrowth can have exponentially higher intensities and promises improvement over superoscillation-based superresolution imaging. Here, we demonstrate the experimental synthesis of controlled supergrowing fields with a maximum growth rate of times the system bandlimit. Our work is an essential step toward realizing supergrowth-based far-field superresolution imaging.
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Supplemental Material
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- See Supplemental Material at http://link.aps.org/supplemental/10.1103/PhysRevResearch.6.L032043 for further details about the numerical optimization techniques and optical fields used in the experiment.
