Results 101 to 110 of about 154,766 (375)

Acoustic Wavefront Shaping Using Ultrahigh Phase Resolution Metamaterial

Advanced Materials Technologies, EarlyView.
A Bilateral Symmetrical T‐shaped (BST) acoustic metamaterial unit cell capable of achieving a high phase resolution of π/36 radians at 8000 Hz is introduced. The approach enables tunable wavefront control through simple rotational adjustment of BST, which offers an alternative to the conventional complex metamaterials unit cell design and a way for ...
Sourabh Dogra, Shubhi Bansal, Vikramjeet Singh, Sriram Subramanian, Manish K. Tiwari   +4 more
wiley   +1 more source

Wavefront Reconstruction of Shack-Hartmann with Under-Sampling of Sub-Apertures

Photonics, 2023
Shack-Hartmann wavefront sensor plays a key role in adaptive optics (AO) systems, which detect the aberrant wavefront by an array of micro-lenslets across the aperture pupil.
Jian Huang, Lianqun Yao, Shuyun Wu, Gongchang Wang   +3 more
doaj   +1 more source

Nonlinear wavefront shaping with optically induced three-dimensional nonlinear photonic crystals

Nature Communications, 2019
Generation of coherent light with desirable amplitude and phase profiles throughout the optical spectrum is a key issue in optical technologies. Nonlinear wavefront shaping offers an exceptional way to achieve this goal by converting an incident light ...
Shan Liu, K. Switkowski, Chenglong Xu, Jie Tian, B. Wang, P. Lu, W. Krolikowski, Y. Sheng   +7 more
semanticscholar   +1 more source

Efficient Polarization-Insensitive Complex Wavefront Control Using Huygens’ Metasurfaces Based on Dielectric Resonant Meta-atoms [PDF]

, 2016
Metasurfaces have shown great promise for the control of optical wavefronts, thus opening new pathways for the development of efficient flat optics. In particular, Huygens’ metasurfaces based on all-dielectric resonant meta-atoms have already shown a ...
K. Chong, Lei Wang, I. Staude, Anthony James, J. Dominguez, Sheng Liu, G. Subramania, M. Decker, D. Neshev, I. Brener, Y. Kivshar   +10 more
semanticscholar   +1 more source

Full‐Domain 3D Digital Twin for Comprehensive Analysis and Validation of Standing Surface Acoustic Wave Generation on LiNbO3 Substrate

Advanced Materials Technologies, EarlyView.
A full‐domain 3D digital twin of a standing surface acoustic wave (SSAW) device on 128° YX LiNbO3 is developed and experimentally validated. The predictive power of the model is confirmed by electrical characterisation and laser Doppler vibrometry measurements, which show excellent agreement with simulations.
Felice Alberto Sfregola, Annalisa Volpe, Andrea Zifarelli, Massimiliano Benetti, Domenico Cannatà, Vincenzo Spagnolo, Pietro Patimisco   +6 more
wiley   +1 more source

Filtered Influence Function of Deformable Mirror for Wavefront Correction in Laser Systems

Photonics, 2021
An influence function filtering method (IFFM) is presented to improve the wavefront correction capability in laser systems by curbing the correction performance degradation resulted from the IF measurement noise.
Yamin Zheng, Ming Lei, Shibing Lin, Deen Wang, Qiao Xue, Lei Huang   +5 more
doaj   +1 more source

Nonreciprocal Wavefront Engineering with Time-Modulated Gradient Metasurfaces

Physical Review Applied, 2019
Author(s): Zang, JW; Correas-Serrano, D; Do, JTS; Liu, X; Alvarez-Melcon, A; Gomez-Diaz, JS | Abstract: © 2019 American Physical Society. We propose a paradigm to realize nonreciprocal wavefront engineering using time-modulated gradient metasurfaces. The
J. Zang, D. Correas-Serrano, J. Do, Xiaoguang Liu, Alejandro Álvarez Melcón, J. S. Gómez-Díaz   +5 more
semanticscholar   +1 more source

Dark‐State Guided‐Mode Resonance Sensors: Engineering Miniature Sensing Platforms

Advanced Optical Materials, EarlyView.
This research introduces compact guided‐mode resonance sensing using Gaussian‐beam‐induced symmetry breaking to excite dark states. The method generates high‐quality resonance signals in a small area, demonstrating a sensor with 128 micro‐cells and 200 nm RIU−1 sensitivity, showing potential for lab‐on‐chip and biosensing applications.
Yeong Hwan Ko, Pawarat Bootpakdeetam, Robert Magnusson   +2 more
wiley   +1 more source

Implications of Atmospheric Differential Refraction for Adaptive Optics Observations [PDF]

, 2002
Many adaptive optics systems operate by measuring the distortion of the wavefront in one wavelength range and performing the scientific observations in a second, different wavelength range.
Roe, Henry G.
core   +2 more sources

Spin-controlled wavefront shaping with plasmonic chiral geometric metasurfaces

Light: Science & Applications, 2018
Metasurfaces, as a two-dimensional (2D) version of metamaterials, have drawn considerable attention for their revolutionary capability in manipulating the amplitude, phase, and polarization of light.
Yang Chen, Xiaodong Yang, Jie Gao
semanticscholar   +1 more source