Results 11 to 20 of about 1,369 (178)
A hybrid achromatic metalens [PDF]
Nature Communications, 2020 Metalenses that correct chromatic aberration also suffer from reduced focusing efficiency. Here, the authors introduce a Hybrid Achromatic Metalens which merges a metalens and phase plate to offer improved focusing efficiency over a broad wavelength ...
F. Balli +3 more
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Thermally reconfigurable metalens
Nanophotonics, 2022 Abstract Reconfigurable metalenses are compact optical components composed by arrays of meta‐atoms that offer unique opportunities for advanced optical systems, from microscopy to augmented reality platforms. Although poorly explored in the context of reconfigurable metalenses, thermo‐optical effects in resonant silicon nanoresonators
Archetti, Anna +5 more
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Robust Achromatic All-Dielectric Metalens for Infrared Detection in Intelligent Inspection
Sensors, 2022 Metalens has the advantages of high design freedom, light weight and easy integration, thus provides a powerful platform for infrared detection. Here, we numerically demonstrated a broadband achromatic infrared all-dielectric metalens over a continuous ...
Wenrong Si +4 more
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Multifocal metalens for detecting several topological charges at different wavelengths
Компьютерная оптика, 2023 A combined high-aperture metalens in a thin silicon nitride film, which consists of two inclined sector metalens, is considered. Each sector metalens consists of a set of binary subwavelength gratings. The diameter of the lens is 14 μm. It has been shown
A.G. Nalimov, V.V. Kotlyar
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Nanomaterials, 2022 A combined high-aperture metalens in a thin silicon nitride film that consists of two tilted sectored metalenses is considered. Each sector of the metalens consists of a set of binary subwavelength gratings. The diameter of the metalens is 14 μm. Using a
Anton Nalimov, Victor Kotlyar
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How good is your metalens? Experimental verification of metalens performance criterion [PDF]
Optics Letters, 2020 A metric for evaluation of overall metalens performance is presented. It is applied to determination of optimal operating spectral range of a metalens, both theoretically and experimentally. This metric is quite general and can be applied to the design and evaluation of future metalenses, particularly achromatic metalenses.
Jacob Engelberg +6 more
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Phase characterisation of metalenses
Light: Science & Applications, 2021 Metalenses have emerged as a new optical element or system in recent years, showing superior performance and abundant applications. However, the phase distribution of a metalens has not been measured directly up to now, hindering further quantitative ...
Maoxiong Zhao +16 more
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Diffractive metalens: from fundamentals, practical applications to current trends
Advances in Physics: X, 2020 Traditional optical lenses and the corresponding imaging systems, which are based on the optical paths when light propagates inside the bulky media, usually suffer from the bulky size, Abbe-Rayleigh diffraction restricted resolution, and limited ...
Wenwei Liu +3 more
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Nanomaterials, 2022 In the propagation phase of a dielectric metasurface, there are two important problems. Firstly, the range of transmittance of the nanopillars for a building metasurface is usually between 60% and 100%, which reduces the metasurface’s overall ...
Xiaohong Sun +6 more
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A Broadband Achromatic Dielectric Planar Metalens in Mid-IR Range
Photonic Sensors, 2022 Metalens are planar lenses composed of the subwavelength arrays, which have unconventional and versatile functionalities to manipulate the light fields compared with the traditional lens. It is noted that the most metalens are designed in a monochromatic
Ye Yuan +9 more
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