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6 / 2025-02-08 18:37:13
Isolated Attosecond electron and γ-Ray Pulse Generation Using Intense Spatiotemporal Optical Vortex Lasers
electron accelration,γ-Ray,vortex laser
极端条件下的基础物理
摘要录用
WangWenpeng / Chinese Academy of Sciences；Shanghai Institute of Optics and Fine Mechanics
Isolated attosecond γ-ray pulses are valuable for probing ultrafast phenomena, particularly in nuclear research. Traditional Gaussian lasers achieve this in the direct acceleration mechanisms but suffer from beam divergence and require dual laser systems, limiting compactness. Here, we demonstrate the generation of an isolated attosecond γ-ray pulse with transverse orbital angular momentum (TOAM) using a circularly polarized spatiotemporal optical vortex (STOV) laser in three-dimensional particle-in-cell simulations. An isolated attosecond electron slice accelerated by the STOV laser (~1022 W/cm2) collides with its reflected front, producing an isolated attosecond collimated (~4°), ultra-brilliant (~5×10²⁴ photons/s/mm²/mrad²/0.1% BW) γ-ray pulse. This STOV-driven mechanism enables single-laser attosecond γ-ray generation with TOAM, offering new opportunities in ultrafast imaging, nuclear excitation, and detection.
重要日期

  • 会议日期

    05月12日

    2025

    至

    05月15日

    2025

  • 03月26日 2025

    初稿截稿日期

  • 04月30日 2025

    提前注册日期

  • 05月15日 2025

    注册截止日期

主办单位
北京应用物理与计算数学研究所
陕西师范大学
承办单位
陕西师范大学
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