Results 71 to 80 of about 4,177,848 (171)

Process stabilization in laser welding of copper using high-speed spatial beam oscillation by means of dynamic beam shaping

This paper reports on the process stabilization of laser welding of copper using high-speed spatial beam oscillation by means of dynamic beam shaping.
Haas, Michael, Zaiß, Felix, Tsukamoto, Masahiro, Sato, Yuji, Fujio, Shumpei, Hagenlocher, Christian   +5 more
core   +1 more source

Coupled tension-torsion vibration of repetitive beam-like structures [PDF]

, 2006
Equivalent continuum stiffness properties, derived from the eigenanalysis of a single cell of a planar beam-like repetitive structure, have previously been employed within well-known dynamic theories, such as Euler–Bernoulli and Timoshenko for flexural ...
Stephen, N.G., Y. Zhang, Zhang, Y., N.G. Stephen   +3 more
core   +1 more source

A Comprehensive Review of Machine Learning Applications in Laser Optics

IEEE Photonics Journal
Machine learning (ML) has emerged as a transformative tool in laser-based optics, driving advancements in both fundamental research and industrial applications.
Saadman Yasar, Murat Yuksel
doaj   +1 more source

Electrically controlled spin angular momentum of light through lithium niobate domain engineering

Physical Review Research
The investigations of spin angular momentum (SAM) of light have demonstrated many interesting photonic-spin-dependent effects. However, it is still a great challenge to manipulate a photonic SAM state in a designable and dynamic way.
Chao Zhou, Xuejing Cui, PengCheng Chen, Xiaoyi Xu, Zhilin Ye, Yawen Su, Yue Wu, Xiaopeng Hu, Shining Zhu, Min Xiao, Yong Zhang   +10 more
doaj   +1 more source

Study About the Flexible Protection Technology Against Rockfall for the Deck of Shaping Bridge on the Dujiangyan-Wenchuan Highway

工程科学与技术, 2014
:A new type of flexible steel rock-shed was proposed to protect the Shaping bridge,which is situated at the exit of the Shaping tunnel on the Du-Wen highway and across the Minjiang River,from the rockfall.The rock-shed consists of steel arch ring,steel ...
向波, 何思明, 欧阳朝军, 庄卫林, 殷强   +4 more
doaj  

High-speed complex field modulation using binary phase-engraved superpixels

Light: Advanced Manufacturing
Complex field modulation (CFM) has found a plethora of applications in physics, biomedicine, and instrumentation. Among existing methods, superpixel-based CFM has been increasingly featured because of its advantages in high modulation accuracy and its ...
Patrick Kilcullen, Jingdan Liu, Youmin Wang, Lei Gong, Jinyang Liang   +4 more
doaj   +1 more source

Tunable Chiral Terahertz Wave Absorption and Beam Manipulation Based on Vanadium Dioxide Metasurfaces

Nanomaterials
Chiral metasurfaces exhibit enormous potential in optical applications, and their integration with phase-change material vanadium dioxide (VO2) provides a novel pathway for dynamic regulation.
Li Luo, Boyu Chen, Jie Li, Yi Zheng, Jin He, Yuanyuan Lv, Lin Liu, Cheng Chen, Jialuo Ding, Xiang Yan, Junqi Chen, Tian Tian, Zhe Zhao, Zhanyi Lin, Menghan Chen, Lin Liang, Jianquan Yao   +16 more
doaj   +1 more source

Identification for Active Vibration Control of Flexible Structure Based on Prony Algorithm

Shock and Vibration, 2016
Flexible structures have been widely used in many fields due to the advantages of light quality, small damping, and strong flexibility. However, flexible structures exhibit the vibration in the process of manipulation, which reduces the pointing ...
Xianjun Sheng, Yuanli Kong, Fengyun Zhang, Rui Yang   +3 more
doaj   +1 more source

Deep-Ultraviolet Beam Homogenizers: Phase-Modulated Metalens vs. Space-Modulated Chromium Thin-Film

Photonics
Deep-ultraviolet (DUV, 193 nm) tools for lithography and precision micromachining are often limited by beam-profile nonuniformity, which degrades critical-dimension control, line-edge roughness, and process windows.
Changtong Li, Zhaoying Qin, Junhong Li, Duanqi Ma, Shubo Cheng, Guojun Xia, Xiaoming Chen, Hsiang-Chen Chui   +7 more
doaj   +1 more source

Exploiting hidden singularity on the surface of the Poincaré sphere

Nature Communications
The classical Pancharatnam-Berry phase, a variant of the geometric phase, arises purely from the modulation of the polarization state of a light beam. Due to its dependence on polarization changes, it cannot be effectively utilized for wavefront shaping ...
Jinxing Li, Aloke Jana, Yueyi Yuan, Kuang Zhang, Shah Nawaz Burokur, Patrice Genevet   +5 more
doaj   +1 more source