Results 21 to 30 of about 4,317 (190)
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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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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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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Vacuum ultraviolet nonlinear metalens
Science Advances, 2022 Vacuum ultraviolet (VUV) light plays an essential role across science and technology, from molecular spectroscopy to nanolithography and biomedical procedures. Realizing nanoscale devices for VUV light generation and control is critical for next-generation VUV sources and systems, but the scarcity of low-loss VUV materials creates a substantial ...
Ming Lun Tseng +13 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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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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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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Photonic crystal fiber metalens [PDF]
Nanophotonics, 2019 Abstract Conventional optical fiber has excellent performance in guiding light, which has been widely employed for long-distance optical communication. Although the optical fiber is efficient for transmitting light, its functionality is limited by the dielectric properties of the core’s and cladding’s materials (e.g.
Jingyi Yang +6 more
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Spherical Aberration-Corrected Metalens for Polarization Multiplexed Imaging
Nanomaterials, 2021 We present a terahertz spherical aberration-corrected metalens that uses the dynamic phase to achieve polarization multiplexed imaging. The designed metalens has polarization–dependent imaging efficiencies and polarization extinction ratios that exceed ...
Shaodong Zhou +3 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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