Results 51 to 60 of about 1,369 (178)

Grating‐Lens Empowered Metafiber for Large‐Angle Light Collection With 3D Nanoprinted Structures

Laser &Photonics Reviews, EarlyView.
A grating‐lens‐based Metafiber enables efficient light coupling into single‐mode fibers at large incidence angles. By combining diffraction and focusing on the fiber facet using a 3D nanoprinted holographic structure, light is selectively coupled only at specific angles while suppressing unwanted signals. This approach achieves high coupling efficiency
Jun Sun, Markus A. Schmidt
wiley   +1 more source

Compact multi-foci metalens spectrometer

Light: Science & Applications, 2023
A lightweight and portable spectrometer is desirable for miniaturization and integration. The unprecedented capability of optical metasurfaces has shown much promise to perform such a task.
Ruoxing Wang, Muhammad Afnan Ansari, Hammad Ahmed, Yan Li, Wenfeng Cai, Yanjun Liu, Songtao Li, Jianlong Liu, Li Li, Xianzhong Chen   +9 more
doaj   +1 more source

An ultra-thin high-efficiency plasmonic metalens with symmetric split ring transmitarray metasurfaces

Results in Physics, 2023
Metasurface lenses (or metalenses) have aroused great attentions and efforts in the community of metamaterials or metasurfaces due to its ultrathin device dimension and superior focusing performances. High-efficiency transmissive metalenses with an ultra-
Yong-Qiang Liu, Wenqiang Chen, Xuemei Du, Yingchao Shu, Lujun Wu, Zhongru Ren, Hongcheng Yin, Jinhai Sun, Kainan Qi, Yongxing Che, Liangsheng Li   +10 more
doaj   +1 more source

KPI‐NeRF: Hyperspectral Neural Radiance Fields from a Single Kaleidoscopic Plenoptic Image

Computer Graphics Forum, EarlyView.
KPI‐NeRF reconstructs hyperspectral light field images from a single kaleidoscopic plenoptic image. By leveraging neural radiance fields, it enables high‐quality spectral and angular de‐multiplexing for dynamic scene capture. Abstract Plenoptic imaging has excessive sampling requirements associated with the high dimensionality of the desired data.
Erqi Huang, John Restrepo, Xun Cao, Ivo Ihrke   +3 more
wiley   +1 more source

Research on inspection method of metalens based on phase-shifting interference

Results in Physics
With the ultra-thin thickness and excellent performance, metalens are bi-dimensional optical elements composed of nanopatterned structures that demonstrate significant potential for various applications such as holography, planar imaging and tomography ...
Wei-Han Li, Zhi-Hao Wang, Cheng-Gang Mo, Yong-Bo Deng, Cheng-Miao Wang, Yu Jiao, Yang Gao, Si-Yuan Yao, Xiaokun Wang, Xin Zhang, Liang Miao, Xin-Dong Chen   +11 more
doaj   +1 more source

A Reflective Metalens With Tunable Focal Length for Millimeter Waves

IEEE Access, 2023
A novel architecture of reconfigurable, flat metalens is proposed with an electrically tunable focal length for applications in wireless communication systems working at the frequencies of millimeter waves (i.e., 60 GHz).
Mohammad Ali Shameli, Mirko Magarotto, Antonio-D Capobianco, Luca Schenato, Marco Santagiustina, Domenico De Ceglia   +5 more
doaj   +1 more source

Planar Super‐Oscillation Diffractive Lenses: Practical Developments and Applications

Nanophotonics, Volume 15, Issue 16, 26 August 2026.
This review examines planar super‐oscillation diffractive lenses as a unified framework for super‐oscillatory lenses and supercritical lenses. It focuses on applications in super‐resolution imaging, micro/nanofabrication, and precision measurement and relates their application‐specific requirements to focal‐field control, multiobjective design ...
Yutian Cheng, Lingyi Tang, Xingcheng Xiao, Xiaochang Yu, Ya Guo, Yiting Yu, Wenli Li   +6 more
wiley   +1 more source

Role of refractive index in metalens performance [PDF]

Applied Optics, 2019
Sub-wavelength diffractive optics, commonly known as metasurfaces, have recently garnered significant attention for their ability to create ultra-thin flat lenses with extremely short focal lengths. Several materials with different refractive indices have been used to create metasurface lenses (metalenses).
Elyas Bayati, Alan Zhan, Shane Colburn, Maksym Viktorovich Zhelyeznyakov, Arka Majumdar   +4 more
openaire   +3 more sources

Distinct thermal effect on biological tissues using subwavelength ultrasound metalens at megahertz

iScience, 2023
Summary: Ultrasound focusing plays an important role in biomedical therapy and diagnosis. Acoustic metalens has showcased remarkable focusing performance but yet to be implemented to the practical ultrasound therapeutic applications.
Yan Zheng, Chen Li, Chuanxin Zhang, Jiajie He, Xue Jiang, Dean Ta   +5 more
doaj   +1 more source

Wafer‐Scale Near‐Infrared Metalenses With High Performance and Low Cost

Nanophotonics, Volume 15, Issue 16, 26 August 2026.
Widespread adoption of metalenses is constrained by prohibitive cost of wafer‐level fabrication. This work achieves 8‐inch wafer‐level fabrication with high uniformity (feature deviation < 5%) and reliable performance by step‐and‐repeat nanoimprint lithography.
Wanjiao Zhang, Meng Wang, Yunxiao Cai, Qiu Wang, Yuan Wang, Lu Han   +5 more
wiley   +1 more source