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.


harmonic generation

angular momentum of light

optical vortex


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 105001


Acceleratorfysik och instrumentering

Atom- och molekylfysik och optik

Fusion, plasma och rymdfysik



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