Results 21 to 30 of about 233 (127)

Full-space trifunctional metasurface with independent control of amplitude and phase for circularly polarized waves. [PDF]

Nanophotonics
Abstract Flexible and diverse manipulation of electromagnetic (EM) waves in half space (reflection or transmission) has facilitated strong aspiration toward full‐space wave control. However, it remains challenging to achieve independent amplitude and phase control, which seriously hinder the real‐world applications.
Li XM, Zhao Y, Lu RP, Sun XF, Yang Z, He HD, Liu YH, Du GH.   +7 more
europepmc   +2 more sources

Flat lens-based subwavelength focusing and scanning enabled by Fourier translation. [PDF]

Nanophotonics
Abstract We demonstrate a technique for flexibly controlling subwavelength focusing and scanning, by using the Fourier translation property of a topology‐preserved flat lens. The Fourier transform property of the flat lens enables converting an initial phase shift of light into a spatial displacement of its focus.
Zhang X, Hu Y, Lin H, Yin H, Li Z, Fu S, Chen Z.   +6 more
europepmc   +2 more sources

Varifocal diffractive lenses for multi-depth microscope imaging [PDF]

, 2022
Flat optical elements enable the realization of ultra-thin devices able to either reproduce or overcome the functionalities of standard bulky components.
Ambrosio Antonio, Borbone Fabio, Maddalena Pasqualino, Oscurato Stefano Luigi, Reda Francesco, Salvatore Marcella   +5 more
core   +1 more source

Stimuli‐responsive active materials for dynamic control of light field

Responsive Materials, Volume 1, Issue 2, November 2023., 2023
Stimuli‐responsive platforms including liquid crystals, proteins, luminescent materials, and metasurfaces possess considerable allure for the development of active optics and photonics applications owing to their dynamic control of light field. This review presents recent advancements achieved with these platforms, which greatly facilitate the ...
Ren Zheng, Yang Wei, Zi‐Chen Zhang, Ze‐Yu Wang, Ling‐Ling Ma, Yu Wang, Ling Huang, Yan‐Qing Lu   +7 more
wiley   +1 more source

Metamaterial Lenses and Their Applications at Microwave Frequencies

Advanced Photonics Research, Volume 2, Issue 10, October 2021., 2021
This review article focuses on microwave metamaterial (MTM) lenses developed in recent years, including bulk lenses made of 3D MTMs and planar lenses made of transmission‐type metasurfaces, for the purpose of microwave engineering. MTMs are able to manipulate the propagation of electromagnetic (EM) waves at extremely fine resolutions and offer ...
Wenxuan Tang, Jia Chen, Tie Jun Cui
wiley   +1 more source

Dielectric metalenses at long-wave infrared wavelengths: Multiplexing and spectroscope

Results in Physics, 2020
Metalenses, being composed of subwavelength phase-control nanostructures, can achieve peculiar manipulations of incident rays. Dispersion is one of the key optical characteristics to be eliminated or exploited in designing broadband optical systems.
Feng Tang, Xin Ye, Qingzhi Li, Yiqun Wang, Haichao Yu, Weidong Wu, Bo Li, Wanguo Zheng   +7 more
doaj   +1 more source

Generation of super-resolved optical needle and multifocal array using graphene oxide metalenses

Opto-Electronic Advances, 2021
Ultrathin flat metalenses have emerged as promising alternatives to conventional diffractive lenses, offering new possibilities for myriads of miniaturization and interfacial applications.
Hongtao Wang, Chenglong Hao, Han Lin, Yongtian Wang, Tian Lan, Cheng-Wei Qiu, Baohua Jia   +6 more
doaj   +1 more source

All‐dielectric metasurfaces capable of dual‐channel complex amplitude modulation

Nanophotonics, Volume 10, Issue 11, Page 2959-2968, September 2021., 2021
Abstract One compound metasurface with multiple functions and precise complex amplitude modulation is beneficial to photonic integration. Here, all‐silicon bifunctional metasurfaces capable of independent amplitude and phase modulation in two circular polarized channels are proposed, which encode complex amplitude information by integrating propagation
Chenglong Zheng, Jie Li, Guocui Wang, Jingyu Liu, Jitao Li, Zhen Yue, Hongliang Zhao, Xuanruo Hao, Yating Zhang, Yan Zhang, Jianquan Yao   +10 more
wiley   +1 more source

Large-Scale Metasurfaces Made by an Exposed Resist [PDF]

, 2020
Phase-gradient metasurfaces have the potential to revolutionize photonics by offering ultrathin alternatives to a wide range of common optical elements, including bulky refractive optics, waveplates, and axicons.
Andr\ue9n, Daniel, K\ue4ll, Mikael, Martinez Llinas, Jade, Tassin, Philippe, Verre, Ruggero   +4 more
core   +1 more source

Recent Advances in Polarization‐Encoded Optical Metasurfaces

Advanced Photonics Research, Volume 2, Issue 6, June 2021., 2021
With the polarization of light being of fundamental importance for basic science and technological applications, the polarization‐encoded functional optical metasurfaces featuring compactness, integration compatibility, and multiple functionalities have been intensively developed over past years.
Fei Ding, Shiwei Tang, Sergey I. Bozhevolnyi   +2 more
wiley   +1 more source