Results 81 to 90 of about 48,988 (289)
Advanced ScienceDetection and anti‐detection with multispectral camouflage are of pivotal importance, while suffer from significant challenges due to the inherent contradiction between detection and anti‐detection and conflict microwave and infrared (IR) stealth ...
Yanzhao Wang +8 more
doaj +1 more source
Laser-controlled adaptive optic for beam quality enhancement in a multipass thin disk amplifier
, 2018 We devise a laser-controlled adaptive optical element which operates intracavity under high intensity radiation. This element substitutes a conventional mechanically deformable mirror and is free of critical heat-sensitive components and electronics. The
Kolbe, Daniel, Lange, Richard
core +1 more source
Study of Free‐Space Optical Quantum Network: Review and Prospectives
Advanced Science, EarlyView.Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley +1 more source
Multichannel full-space coding metasurface with linearly-circularly-polarized wavefront manipulation
NanophotonicsAchieving independent multitasked wavefront control by using an ultrathin plate is a challenge to increase information capacity in integration optics and radar applications.
Luo Huiling +8 more
doaj +1 more source
Dynamic Ultrasound Projector Controlled by Light
Advanced Science, 2022 Dynamic acoustic wavefront control is essential for many acoustic applications, including biomedical imaging and particle manipulation. Conventional methods are either static or in the case of phased transducer arrays are limited to a few elements and ...
Zhichao Ma +3 more
doaj +1 more source
Nonlinear Dielectric Metasurfaces for Wavefront Control
Conference on Lasers and Electro-Optics, 2018 We demonstrate Si-based metasurfaces for third-harmonic generation of an arbitrary wavefront. The nonlinear metasurfaces produce phase gradients within a full 0–2π phase range. We achieve 92% diffraction efficiency of the nonlinear wavefront control.
Lei Wang +5 more
openaire +2 more sources
Measuring optical transmission matrices by wavefront shaping
, 2015 We introduce a simple but practical method to measure the optical transmission matrix (TM) of complex media. The optical TM of a complex medium is obtained by modulating the wavefront of a beam impinging on the complex medium and imaging the transmitted ...
Lee, KyeoReh +3 more
core +1 more source
Advanced Science, EarlyView.In this work, a bioinspired all‐in‐one underwater quality evaluation metamaterial, combining sound attenuation, diffuse reflection, and mechanical robustness, is proposed based on jumping spider locomotion and human skeletal biomechanics. Meanwhile, a CNN‑driven quality evaluation framework is established for theoretically dimension‐reduced ...
Hongze Li +8 more
wiley +1 more source
A Review of Wavefront Sensing and Control Based on Data-Driven Methods
AerospaceOptical systems suffer from wavefront aberrations due to complex atmospheric environments and system component errors, leading to systematic aberrations and significantly degrading optical field quality. Therefore, the detection and correction of optical
Ye Zhang +4 more
doaj +1 more source
Advanced Science, EarlyView.This work demonstrates a receiver‐transmitter‐integrated metasurface that decomposes an incident wave into orthogonal components and routes them into separate channels. Inspired by a “Wheel‐of‐Fortune” mechanism, it enables independent control over the amplitude, phase, and polarization of the transmitted wave.
Tong Liu +8 more
wiley +1 more source