Results 31 to 40 of about 4,317 (190)
Inverse design of high-NA metalens for maskless lithography
Nanophotonics, 2023 We demonstrate an axisymmetric inverse-designed metalens to improve the performance of zone-plate-array lithography (ZPAL), one of the maskless lithography approaches, that offer a new paradigm for nanoscale research and industry.
Chung Haejun +4 more
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Silicon nitride metalenses for unpolarized high-NA visible imaging [PDF]
, 2017 As one of nanoscale planar structures, metasurface has shown excellent superiorities on manipulating light intensity, phase and/or polarization with specially designed nanoposts pattern.
Chen, Yu-Jie +8 more
core +3 more sources
Sharp focus of a circularly polarized optical vortex at the output of a metalens illuminated by linearly polarized light [PDF]
Компьютерная оптика, 2019 A three-level spiral metalens in an amorphous silicon film is designed. The metalens relief consists of two subwavelength gratings with a 220-nm period (for 633 nm wavelength) and depths of 90 and 170 nm. The metalens forms a left-hand circular polarized
Anton Nalimov, Victor Kotlyar
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Broadband optical power-limiter metalens [PDF]
OSA Optical Design and Fabrication 2021 (Flat Optics, Freeform, IODC, OFT), 2021 We report a hybrid system that synergically combines a broadband optical power limiter with a transmittance difference between on-state (70°C) and off-state (25°C) about 62.5%, and a diffraction-limited broadband metalens from 1534 nm to 1664 nm.
Hsu, Liyi, Ndao, Abdoulaye
openaire +2 more sources
Bandpass Filter Integrated Metalens Based on Electromagnetically Induced Transparency
Nanomaterials, 2022 A bandpass filter integrated metalens based on electromagnetically induced transparency (EIT) for long-wavelength infrared (LWIR) imaging is designed in this paper.
Dongzhi Shan +10 more
doaj +1 more source
Photonics Research, 2021 Metalenses are ultrathin optical elements that can focus light using densely arranged subwavelength structures. Due to their minimal form factor, they have been considered promising for imaging applications that require extreme system size, weight, and power, such as in consumer electronics and remote sensing. However, as a major impediment prohibiting
Feng Zhao +5 more
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Actively Tunable Metalens Array Based on Patterned Phase Change Materials
Applied Sciences, 2019 Recently, the metalens has been investigated for its application in many fields due to its advantages of being much smaller than a conventional lens and is compatible with nano-devices.
Wei Bai +7 more
doaj +1 more source
Nanomaterials, 2022 Needle beams have received widespread attention due to their unique characteristics of high intensity, small focal size, and extended depth of focus (DOF).
Zhe Shen, Shijie Huang
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Shaping a subwavelength needle with ultra-long focal length by focusing azimuthally polarized light [PDF]
, 2015 10.1038/srep09977Scientific ...
Hong, Minghui +6 more
core +1 more source
High numerical aperture metalens to generate an energy backflow
Компьютерная оптика, 2020 Using electronic beam lithography and reactive ion beam etching, a metalens is manufactured in a thin layer of amorphous silicon of a 130-nm depth, a 30-µm diameter, and a 633-nm focal length (equal to the illumination wavelength).
V.V. Kotlyar +3 more
doaj +1 more source