Results 91 to 100 of about 112,176 (189)

Extreme-Ultraviolet Vortices from a Free-Electron Laser

Physical Review X, 2017
Extreme-ultraviolet vortices may be exploited to steer the magnetic properties of nanoparticles, increase the resolution in microscopy, and gain insight into local symmetry and chirality of a material; they might even be used to increase the bandwidth in
Primož Rebernik Ribič, Benedikt Rösner, David Gauthier, Enrico Allaria, Florian Döring, Laura Foglia, Luca Giannessi, Nicola Mahne, Michele Manfredda, Claudio Masciovecchio, Riccardo Mincigrucci, Najmeh Mirian, Emiliano Principi, Eléonore Roussel, Alberto Simoncig, Simone Spampinati, Christian David, Giovanni De Ninno   +17 more
doaj   +1 more source

Spatially dependent Raman gain by vortex beam in a four-level N-typed atomic system

Scientific Reports
An efficient scheme for controlling the spatial Raman gain is proposed in a cold atomic ensemble with a four-level N-typed configuration. The cold atoms are driven by the Laguerre-Gaussian (LG) vortex beams. Considering the control and driving fields are
Tong Zhang, Kai-Kai Zhang, Xu Deng, Tao Shui, Wen-Xing Yang   +4 more
doaj   +1 more source

Digital generation of super-Gaussian perfect vortex beams via wavefront shaping with globally adaptive feedback

High Power Laser Science and Engineering
High-intensity vortex beams with tunable topological charges and low coherence are highly demanded in applications such as inertial confinement fusion (ICF) and optical communication.
Rui Ma, Ke Hai Luo, Jing Song He, Wei Li Zhang, Dian Yuan Fan, Anderson S. L. Gomes, Jun Liu   +6 more
doaj   +1 more source

Intense harmonics generation with customized photon frequency and optical vortex

New Journal of Physics, 2016
An optical vortex with orbital angular momentum (OAM) enriches the light and matter interaction process, and helps reveal unexpected information in relativistic nonlinear optics. A scheme is proposed for the first time to explore the origin of photons in
Xiaomei Zhang, Baifei Shen, Yin Shi, Lingang Zhang, Liangliang Ji, Xiaofeng Wang, Zhizhan Xu, Toshiki Tajima   +7 more
doaj   +1 more source

Giant Vortex Dichroism in Simplified-Chiral-Double-Elliptical Metamaterials

Nanomaterials
Vortex dichroism in chiral metamaterials is of great significance to the study of photoelectric detection, optical communication, and the interaction between light and matter.
Shiqi Luo, Kangzhun Peng, Zhi-Yuan Li, Wenyao Liang   +3 more
doaj   +1 more source

Enhancement of Doppler spectroscopy to transverse direction by using optical vortex. [PDF]

Sci Rep, 2023
Minagawa H, Yoshimura S, Terasaka K, Aramaki M.   +3 more
europepmc   +1 more source

Spatial multiplexing for robust optical vortex transmission with optical nonlinearity. [PDF]

Opt Express, 2023
Fan W, Chen T, Tang X, Xu X, Yuan L, Yakovlev VV, Zhu SY, Wang DW, Zhang D.   +8 more
europepmc   +1 more source

100-W Yb:YAG thin-disk vortex laser oscillator

Light: Advanced Manufacturing
Optical vortices carrying orbital angular momentum and spiral wavefront phases have garnered increasing research interest owing to their numerous applications.
Hongshan Chen, Qing Wang, Xin Liu, Heyan Liu, Xinhua Guo, Tingting Yang, Lisong Yan, Jinwei Zhang   +7 more
doaj   +1 more source

Time-resolved plasmon-assisted generation of optical-vortex pulses. [PDF]

Sci Rep, 2023
Albar EI, Bonafé FP, Kosheleva VP, Ohlmann ST, Appel H, Rubio A.   +5 more
europepmc   +1 more source

Inverse design and optical vortex manipulation for thin-film absorption enhancement. [PDF]

Nanophotonics, 2023
Bae M, Jo J, Lee M, Kang J, Boriskina SV, Chung H.   +5 more
europepmc   +1 more source