Results 211 to 220 of about 154,766 (375)

Rough Quasi‐Conformal Mapping for Realizing Omnidirectional Light Wave Manipulation in Lower‐Index Meta‐Lens

open access: yesLaser &Photonics Reviews, EarlyView.
A rough quasi‐conformal mapping strategy breaks the rigid geometric constraints of transformation optics. By trading perfect local angle preservation for a dramatically reduced refractive index, this design paradigm enables the creation of ultra‐flat, wide‐angle, and even omnidirectional lenses that are both high‐performance and manufacturable, opening
Feiyang Deng, Jiawen Hao, Kwai Man Luk
wiley   +1 more source

Compact Spectral Imaging: A Review of Miniaturized and Integrated Systems

open access: yesLaser &Photonics Reviews, EarlyView.
This review explores the rapid shift toward compact spectral imaging systems by examining four key design paradigms: Do‐It‐Yourself (DIY) platforms, freeform optics, filter‐on‐chip integration, and multifunctional metasurfaces. The discussion highlights critical applications in medicine, agriculture, and environmental monitoring, providing comparative ...
Sani Mukhtar, Amir Arbabi, Jaime Viegas
wiley   +1 more source

Customizing 3D Polarization Structures at Second Harmonic Frequency

open access: yesLaser &Photonics Reviews, EarlyView.
The nonlinear optical metasurfaces that can generate second harmonic waves (SHWs) and manipulate 3D polarization structures are designed and fabricated. Based on the concept of nonlinear geometric phase, the desired phase distributions of the SHWs are encoded onto the metasurfaces by using gold C3 meta‐atoms.
Rong Rong   +6 more
wiley   +1 more source

A calcium influx is triggered and propagates in the zygote as a wavefront during in vitro fertilization of flowering plants

open access: green, 2000
A. F. Antoine   +5 more
openalex   +2 more sources

Orbital Angular Momentum Meta‐Holography with Full‐Polarization Control

open access: yesLaser &Photonics Reviews, EarlyView.
This work demonstrates full‐polarization‐controlled orbital angular momentum (OAM) holography using a single‐layer dielectric metasurface. By independently modulating the complex‐amplitude distributions of two circular polarizations, arbitrary spatially varying polarization is achieved while preserving OAM properties.
Yue Han   +6 more
wiley   +1 more source

High‐Resolution 3D Imaging with Tunable Point Cloud Projection Based on Meta‐Device

open access: yesLaser &Photonics Reviews, EarlyView.
A meta‐based tunable point cloud projection that enables high‐resolution 3D imaging through a dynamic meta‐device is demonstrated. By adjusting spatial sampling, the system achieves significantly sharper reconstructions while remaining compact. The innovation opens new possibilities for applications such as facial recognition, augmented reality, and ...
Yin Zhou   +6 more
wiley   +1 more source

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