Speaker
Description
Vortex radiation carries orbital angular momentum (OAM) and is attractive for applications including chiral characterization, magnetic imaging, and ultrafast light--matter interaction studies. A scheme for vortex radiation generation and diagnostics at the Shanghai Soft X-ray Free-Electron Laser facility (SXFEL) based on wavefront shaping of a 266 nm external seed laser is studied. Three-dimensional simulations with realistic SXFEL parameters show clear annular intensity and helical phase distributions, with peak power reaching the sub-gigawatt level at a representative working point. The proposed diagnostics further enable clear identification and characterization of the generated OAM radiation. The results support the feasibility of controlled vortex radiation generation at SXFEL and its future extension to shorter wavelengths.
| Paper status | Resubmitted proceeding files received and assigned to an editor. Accepted. |
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