Breaking the Temporal Resolution Limit by Superoscillating Optical Beats

Eliezer, Yaniv; Hareli, Liran; Lobachinsky, Lilya; Froim, Sahar; Bahabad, Alon

doi:10.1103/physrevlett.119.043903

Cited by 43 publications

(37 citation statements)

References 31 publications

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“…The phenomenon was first experimentally observed in the diffraction of coherent light by a quasicrystal array of nanoholes in a metal screen and its potential for spatial and temporal super-resolution focusing and imaging without evanescent fields was recognized, see Refs. [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Far-Field Superoscillatory Metamaterial Superlens

Yuan

Rogers

et al. 2019

Phys. Rev. Applied

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We demonstrate a metamaterial superlens: a planar array of discrete subwavelength metamolecules with individual scattering characteristics tailored to vary spatially to create subdiffraction superoscillatory focus of, in principle, arbitrary shape and size. Metamaterial free-space lenses with previously unattainable effective numerical apertures -as high as 1.52 -and foci as small as 0.33λ in size are demonstrated. Superresolution imaging with such lenses is experimentally verified breaking the conventional diffraction limit of resolution and exhibiting resolution close to the size of the focus. Our approach will enable far-field label-free super-resolution nonalgorithmic microscopies at harmless levels of intensity, including imaging inside cells, nanostructures, and silicon chips, without impregnating them with fluorescent materials.

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Section: Introductionmentioning

confidence: 99%

Far-Field Superoscillatory Metamaterial Superlens

Yuan

Rogers

et al. 2019

Phys. Rev. Applied

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“…Superoscillations have relevance in all areas of physics where waves are superposed, e.g., in quantum mechanics [20]. It has also been proposed and demonstrated that superoscillations could be exploited to obtain improved optical resolution [21][22][23][24], ultrasonic lateral resolution [25], or radiofrequency measurement in bandwidth-limited systems [26]. The main problem with the practical application of superoscillations in many areas has been their small amplitude.…”

Section: Introductionmentioning

confidence: 99%

Temporal superoscillations of subterahertz coherent acoustic phonons

Brehm

Akimov

Campion

et al. 2020

Phys. Rev. Research

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We observe coherent acoustic phonon superoscillations at subterahertz frequencies. The superoscillations result from the interference of optically excited coherent longitudinal acoustic phonon modes in a GaAs/AlGaAs superlattice. The superoscillations are seen in local temporal regions and their frequency is up to 60% larger than the highest-frequency excited and detected phonon mode. Such superoscillatory phonon pulses may potentially be used for high-resolution acoustic measurement in strong scattering media.

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“…Based on the super‐oscillation interference, super‐oscillation lens (SOL) provides an unprecedented avenue for far‐field noninvasive super‐resolution imaging, as demonstrated in experiments . SOL has been successfully applied to the subdiffraction focusing and imaging as well as the heat assisted magnetic recording in confocal scanning system . The key point of super‐oscillation imaging is appropriate pupil filter in imaging optics, which is usually realized by binary amplitude elements, spatial light modulators or specially designed nanostructures .…”

Section: Introductionmentioning

confidence: 99%

Achromatic Broadband Super‐Resolution Imaging by Super‐Oscillatory Metasurface

Zhu

Zhang

Wang

et al. 2018

Laser & Photonics Reviews

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Past decades have seen enormous efforts to achieve subdiffraction resolution optical imaging, but most of them are suffering from either complex near‐field manipulation or prelabeling of specific specimen, like scanning near‐field optical microscopes and stimulated emission depletion microscopes. The optical super‐oscillation phenomenon seems to provide a method of far field super‐resolution imaging without particularly dealing with objects. However, the reported optical super‐oscillation imaging methods were usually constrained to narrow bandwidth, which is mainly due to the inherent complex light interference features. Here, benefiting from the nearly dispersionless feature of phase modulations with metasurface, a super‐oscillatory metasurface filter is proposed for broadband super‐resolution imaging. In demonstrative experiments, resolving ability of about 0.64 times of the Rayleigh criterion is obtained for visible light ranging from 400 to 700 nm. This method is expected to potentially promote the development of super‐resolving telescopes and microscopes based on super‐oscillation optics.

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Breaking the Temporal Resolution Limit by Superoscillating Optical Beats

Cited by 43 publications

References 31 publications

Far-Field Superoscillatory Metamaterial Superlens

Far-Field Superoscillatory Metamaterial Superlens

Temporal superoscillations of subterahertz coherent acoustic phonons

Achromatic Broadband Super‐Resolution Imaging by Super‐Oscillatory Metasurface

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