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Achromatic stigmatism: achromatic Cartesian ovoid
Journal of the Optical Society of America A, 2022Monochromatic and chromatic aberrations are imaging defects mainly studied from a geometrical optics point of view. These defects are treated through optimization and minimization methods to achieve acceptable performance in optical imaging systems, where the correct choice of glass materials is one of the main challenges.
Alberto Silva-Lora, Rafael Torres
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Multiwavelength Achromatic Metalens in Visible by Inverse Design
Advanced Optical Materials, 2023Achromatic metalenses are promising alternatives to traditional lenses, allowing the miniaturization of optical systems. However, the limitation due to the group delay range of the meta‐atoms that can be fabricated requires a trade‐off relationship ...
Qiang Jiang +2 more
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High Efficiency Visible Achromatic Metalens Design via Deep Learning
Advanced Optical Materials, 2023 Metalenses with both achromatic performance and high focusing efficiency are always challenging, especially in visible range. In this work, a deep learning model is developed to accelerate the design of achromatic metalenses based on the geometric phase ...
Feilou Wang +2 more
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The achromatic number of the union of cycles
Discrete Applied Mathematics, 2004 The achromatic number of a graph G is the largest number of colors which can be assigned to the vertices of G so that adjacent vertices get different colors and each pair of distinct colors appears on the ends of some edge.
Jaeun Lee
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Simultaneous contrast and gamut relativity in achromatic color perception
Vision Research, 2012 Simultaneous contrast refers to the respective whitening or blackening of physically identical image regions surrounded by regions of low or high luminance, respectively.
Tony Vladusich
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Broadband Achromatic Terahertz Metalens Constituted by Si–SiO2–Si Hybrid Meta‐Atoms
Advanced Functional Materials, 2023Metasurfaces have proved to possess extraordinary properties and propelled the development of versatile functional devices in the terahertz domain, but the intrinsic dispersion severely impedes their broadband applications. Sporadic studies on achromatic
Yi Xu +8 more
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A Holographic Broadband Achromatic Metalens
Laser & Photonics Reviews, 2023Metalens with nanostructured optical elements are designed to control wavefront shaping at the wavelength‐scale thickness. However, most metalens still suffer from large chromatic aberrations due to phase dispersion, limiting their wide applications for ...
Xinghao Wang +13 more
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Broadband, Low-Profile, Planar Reflectarray Antenna Based on an Achromatic Metasurface
IEEE Transactions on Antennas and Propagation, 2023This communication presents a broadband, low-profile, and planar reflectarray (RA) antenna based on an achromatic metasurface. The achromatic metasurface has advantageous broadband focusing capabilities compared to conventional RAs.
Jianing Yang, Hai Xin, M. Tang
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Broadband Achromatic Metalens in Mid‐Wavelength Infrared
Laser and Photonics Reviews, 2021Metasurface provides a powerful platform to correct the chromatic aberration of conventional lenses in a flexible, integratable, and ultra‐compact manner.
Kai Ou, Feilong Yu, Guanhai Li
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Achromatic Broadband Multi‐Layer Diffraction Mode Multiplexing
Laser & Photonics Reviews, 2023Efforts have been made in recent years to achieve broadband mode‐division multiplexing (MDM) for wavelength and mode hybrid multiplexing optical interconnect.
Aru Kong +5 more
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