Results 81 to 90 of about 1,369 (178)

Optimization for Si Nano-Pillar-Based Broadband Achromatic Metalens

IEEE Photonics Journal
An innovative optimization algorithm, named the hybrid particle swarm and genetic algorithm (PSO_GA), is proposed for designing broadband achromatic metalenses. A database is first constructed by scanning the parameters of the unit cell of the metalenses
Zhaohui Li, Yihao Lv
doaj   +1 more source

Detection of elliptical polarization parameters using a metalens

Компьютерная оптика
A metalens capable of detecting the polarization ellipticity of an incident beam is considered in this paper. This metalens consists of blocks with diffraction gratings of a 140-nm height and a 220-nm period.
A.G. Nalimov, V.V. Kotlyar, A.A. Kovalev, S.D. Poletaev, Y.V. Khanenko   +4 more
doaj   +1 more source

Active magneto-optical metalens

Optics Express
We demonstrate a metasurface made of bismuth-substituted yttrium iron garnet (BIG) nanodisks that, in the presence of a magnetic field, functions as a polarization-sensitive metalens. Specifically, switching the handedness of the incident circularly polarized light (from right- to left-handed or vice versa) results in distinct focusing behavior.
Forouzan Habibighahfarokhi, Olga Sergaeva, Costantino De Angelis, Davide Rocco   +3 more
openaire   +3 more sources

Metalens for structured light

JSAP-OSA Joint Symposia 2018, 2018
Metasurfaces have very wide application such as beam de- flection, holographic images, polarization generation, tunable meta-devices, sensing, achromatic metalens [1] and pixel-level full-color routing [2][3]. Metalens have great ability in light focusing and can be tailored to exhibit varied functionalities in ultrathin optical applications.
Chen, Mu Ku, Chu, Cheng Hung, Kuo, Hsin Yu, Chen, Yu Han, Lin, Ren Jie, Chung, Tsung Lin, Huang, Yi-Teng, Chen, Jia-Wern, Tsai, Din Ping   +8 more
openaire   +1 more source

Varifocal Alvarez metalens array for adaptive light-field imaging

Nature Communications
Metalens arrays hold great promise for compact light-field imaging systems owing to their compactness and wavefront shaping capabilities. However, their fixed focal lengths fundamentally limit depth-of-field modulation and axial scanning, restricting ...
Xiaoyu Che, Xiaoyuan Liu, Xin Zhang, Yuhao Lei, Yefeng Yu, Lei Wang, Junxiao Zhou, Zhishan Gao, Din Ping Tsai   +8 more
doaj   +1 more source

Polychromatic metalens [PDF]

Nature Photonics, 2012
openaire   +1 more source

Metalens Enables Parallel Chromatic Confocal Imaging over a Millimeter-Scale Depth Range with an Axial Space-Bandwidth Product of 68. [PDF]

Nano Lett
Lin YJ, Zhao L, Rahman MT, Liu B, Ding G, Xia T, Yang J, Ni X, Liu Z.   +8 more
europepmc   +1 more source

Wafer-level meta-aspheric lenses for compact wide-FOV NIR imaging. [PDF]

Light Sci Appl
Lee E, Rho J.
europepmc   +1 more source

Multi-target positioning and motion tracking enabled by a compound meta-eye system. [PDF]

Microsyst Nanoeng
Zhang L, Zhang L, Zhao X, Li J, Cao H, Yang J, Zhang C, Wang Z, Li Y, Shi H, Zhang Z, Li J, Guo H, Xing F, Zhang Z.   +14 more
europepmc   +1 more source

Disordered mosaic metasurfaces with scalable functional density. [PDF]

Nat Commun
Li C, Liu C, Peters C, Yu H, Maier SA, Forbes A, Ren H.   +6 more
europepmc   +1 more source