Results 51 to 60 of about 80,548 (342)

Achieving the laser intensity of 5.5×1022 W/cm2 with a wavefront-corrected multi-PW laser.

Optics Express, 2019
The generation of ultrahigh intensity laser pulses was investigated by tightly focusing a wavefront-corrected multi-petawatt Ti:sapphire laser. For the wavefront correction of the PW laser, two stages of deformable mirrors were employed.
J. W. Yoon, C. Jeon, J. Shin, S. Lee, H. W. Lee, I. Choi, H. T. Kim, J. Sung, C. Nam   +8 more
semanticscholar   +1 more source

Manipulating Ferroelectric Topological Polar Structures with Twisted Light

Advanced Materials, EarlyView.
We demonstrate dynamic control of ferroelectric order in quasi‐2D CsBiNb2O7 using twisted ultraviolet light carrying orbital angular momentum. Our approach harnesses non‐resonant multiphoton absorption and induced strain to modulate topological of ferroelectric polarization textures.
Nimish P. Nazirkar, Viet Tran, Pascal Bassène, Atoumane Ndiaye, Julie Barringer, Jie Jiang, Wonsuk Cha, Ross Harder, Jian Shi, Moussa N'Gom, Edwin Fohtung   +10 more
wiley   +1 more source

Method for distortion correction of multi-layered surface reconstruction using time-gated wavefront sensing approach [PDF]

Journal of the European Optical Society-Rapid Publications, 2013
In order to estimate the multi-layer surface profile and to detect the inter-layer surfaces defects, gated wavefront sensing approach has been proposed in the previous works [1, 2].
Tan C. S., Wang X., Ng Y. H., Lim W. K., Chai T. Y.   +4 more
doaj   +1 more source

Wavefront Coherent Compensation Technology Under Direct Sunlight in Free Space Optical Communication System

IEEE Photonics Journal, 2021
The charge-coupled device-based Shaker–Hartmann wavefront sensor has been widely used to compensate for wavefront distortion in coherent optical communication.
Xu Yan, Changqing Cao, Wenrui Zhang, Xiaodong Zeng, Zhejun Feng, Zengyan Wu, Ting Wang   +6 more
doaj   +1 more source

Neuromorphic Light‐Responsive Organic Matter for in Materia Reservoir Computing

Advanced Materials, EarlyView.
In this work we show that light‐responsive adaptive organic matter can store and process information at the matter level, and emulate neuromorphic functionalities such as short term memory, long term memory and visual memory. Besides demonstrating that material dynamics can be exploited for spatio‐temporal event detection and motion perception, we show
Federico Ferrarese Lupi, Mateo Rosero‐Realpe, Antonio Ocarino, Francesca Frascella, Gianluca Milano, Angelo Angelini   +5 more
wiley   +1 more source

Hyperspectral compressive wavefront sensing

High Power Laser Science and Engineering, 2023
Abstract Presented is a novel way to combine snapshot compressive imaging and lateral shearing interferometry in order to capture the spatio-spectral phase of an ultrashort laser pulse in a single shot. A deep unrolling algorithm is utilized for snapshot compressive imaging reconstruction due to its parameter efficiency and superior speed relative ...
Sunny Howard, Jannik Esslinger, Robin H. W. Wang, Peter Norreys, Andreas Döpp   +4 more
openaire   +4 more sources

How to Manufacture Photonic Metamaterials

Advanced Materials Technologies, EarlyView.
Metamaterials boast applications such as invisibility and “hyperlenses” with resolution beyond the diffraction limit, but these applications haven’t been exploited in earnest and the market for them hasn’t grown much likely because facile and economical methods for fabricating them without defect has not emerged.
Apurba Paul, Gregory Timp
wiley   +1 more source

Wavefront modulation and subwavelength diffractive acoustics with an acoustic metasurface [PDF]

Nature Communications, 2014
Metasurfaces are a family of novel wavefront-shaping devices with planar profile and subwavelength thickness. Acoustic metasurfaces with ultralow profile yet extraordinary wave manipulating properties would be highly desirable for improving the ...
Yangbo Xie, Wenqi Wang, Huanyang Chen, Adam Konneker, B. Popa, S. Cummer   +5 more
semanticscholar   +1 more source

Dynamic and Reconfigurable Acoustic Fields Enabled by Morphing Fluidic Holographic Lenses

Advanced Materials Technologies, EarlyView.
Real‐time reconfiguration of the acoustic field is achieved using fluidic holographic lenses that dynamically morph their structure via controlled volume changes. This compact, programmable approach eliminates the need for active elements like phased arrays, enabling high‐resolution, adaptive wavefront control with enhanced flexibility for diverse ...
Moustafa Sayed Ahmed, Shima Shahab
wiley   +1 more source

Computational near-field and far-field parameter measurement of high-power lasers using modified coherent modulation imaging

High Power Laser Science and Engineering
Accurate characterization of high-power laser parameters, especially the near-field and far-field distributions, is crucial for inertial confinement fusion experiments.
Hua Tao, Xiaoliang He, Chengcheng Chang, Liqing Wu, Deng Liu, Fei Chen, Cheng Liu, Jianqiang Zhu   +7 more
doaj   +1 more source