Vortex beam of tilted orbital angular momentum generated from grating
Artikel i vetenskaplig tidskrift, 2019
Diffracted vortex beams carrying stable tilted total orbital angular momentum (OAM) vector with respect to the propagation direction are generated, when a linearly polarized Laguerre-Gaussian laser pulse impinges on a solid plasma grating target as shown in the particle-in-cell simulation. The diffracted beams are space-separated in the corresponding diffraction directions. It is found that the transverse OAM results from the rotation of the transverse momentum of the vortex harmonics, and can be modulated by the grating period. The stable average transverse OAM provides us deeper insight to the vortex property of light and may provide an additional controllable parameter for potential applications.
grating
harmonic generation
angular momentum of light
optical vortex
Författare
Jing Qiu
Chinese Academy of Sciences
Baifei Shen
Chinese Academy of Sciences
Shanghai Normal University
Xiaomei Zhang
Chinese Academy of Sciences
Zhigang Bu
Chinese Academy of Sciences
Longqing Yi
Chalmers, Fysik, Subatomär fysik och plasmafysik
Lingang Zhang
Chinese Academy of Sciences
Zhizhan Xu
Chinese Academy of Sciences
Plasma Physics and Controlled Fusion
0741-3335 (ISSN) 1361-6587 (eISSN)
Vol. 61 10 105001Ämneskategorier
Acceleratorfysik och instrumentering
Atom- och molekylfysik och optik
Fusion, plasma och rymdfysik
DOI
10.1088/1361-6587/ab3956