Speaker
Chenzhi Xu
(Shanghai Institute of Applied Physics)
Description
X-ray beams, carrying orbital angular momentum (OAM), are emerging as a powerful tool to probe matter. Recently, the self-seeded FEL with OAM (SSOAM) method has been proposed to generate high-power X-ray OAM pulses, which places the traditional optical elements in the linear regime of the FEL amplification process before saturation to reduce the thermal load of the optical element. In this work, we propose to utilize the SSOAM scheme to produce attosecond X-ray vortices with high intensity. Numerical simulations demonstrate the X-ray OAM pulses with peak powers of more than one hundred gigawatts and a pulse duration of the order of hundred attoseconds can be achieved using the proposed method.
Authors
Chenzhi Xu
(Shanghai Institute of Applied Physics)
Jiawei Yan
(European X-Ray Free-Electron Laser)
Gianluca Geloni
(European X-Ray Free-Electron Laser)
Christoph Lechner
(European X-Ray Free-Electron Laser)
Haixiao Deng
(Shanghai Institute of Applied Physics)
