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Isolated attosecond electron and hard x-ray pulse generation by ultra-intense spatiotemporal vortex laser
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Journal Article
Isolated attosecond electron and hard x-ray pulse generation by ultra-intense spatiotemporal vortex laser
2024
Overview
The spatiotemporal optical vortex (STOV) laser pulse, characterized by containing a space-time dependent spiral phase structure and intrinsic transverse orbital angular momentum (OAM), has been of much recent research interest for basic physics as well as potential applications in optical communication and manipulation, as well as the attosecond sciences. Here we consider electron acceleration and generation of attosecond hard x-rays by irradiating a thin foil with intense STOV laser pulse. It is found that the affected foil electrons can be trapped and acquire transverse OAM, or synchrotron-like motion, from the STOV, as well as accelerated forward by the transverse and enhanced axial laser electric fields to form a tiny energetic bunch at the front of the laser pulse and emit short ( ∼ 400 attosecond) high-flux ( > 10 9 photons per pulse) hard (100–1000 keV) x rays.
Publisher
IOP Publishing
Subject
