Results 171 to 180 of about 107,362 (279)

Optical phased arrays for wavefront shaping in forward scattering media. [PDF]

open access: yesNanophotonics
Milojković F   +5 more
europepmc   +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

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

Multi-faceted digital pyramid wavefront sensor

open access: green, 2014
Vyas Akondi   +2 more
openalex   +2 more sources

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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