发表机构
National Science Center Kharkiv Institute of Physics and Technology（国家科学中心哈尔科夫物理技术研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究通过端到端模拟，发现使用反射或透射衍射光栅形成前倾飞秒激光脉冲，可显著提高非相对论电子沿反射光栅结构的加速效率，其中反射光栅效果更优。
AI 中文摘要
针对前倾激光脉冲的形成以及随后沿反射光栅结构运动的非相对论电子的加速，进行了全面的（端到端）模拟。激光脉冲的倾斜是通过使用另一个衍射光栅（反射式或透射式）形成的。脉冲的光谱范围（FWHM）为803–863 nm，初始持续时间约为17 fs。同时，还计算了激光脉冲正入射情况下的加速作为对比。研究结果表明，与正入射脉冲相比，使用通过反射衍射光栅倾斜前端的飞秒激光脉冲，能显著提高非相对论电子的激光加速效率。此外，还发现使用透射衍射光栅来形成倾斜脉冲前沿，相对于加速光栅的正入射也能提高加速效率，但加速速率低于使用反射衍射光栅时的情况。
英文摘要
A comprehensive (start-to-end) simulation was performed regarding the formation of a front-tilted laser pulse and the subsequent acceleration of non-relativistic electrons moving along a reflective grating structure. The laser pulse tilt was formed using another diffraction grating -- either reflective or transmissive. The pulse had a spectral range (FWHM) of 803--863 nm and an initial duration of approximately 17 fs. Acceleration under normal laser pulse incidence was also calculated for comparison. Research results indicate that the use of a femtosecond laser pulse with a front, tilted by means of a reflective diffraction grating, significantly enhances the efficiency of laser acceleration of non-relativistic electrons compared to the case of a pulse at normal incidence. Furthermore, it was found that using a transmissive diffraction grating to shape the tilted pulse front also increases acceleration efficiency relative to normal incidence on the accelerating grating, although the acceleration rate is lower than when a reflective diffraction grating is used.
Comments10 pages, 6 figures, 2 tables. Start-to-end PIC simulations of non-relativistic electron acceleration along a reflective grating structure driven by a front-tilted femtosecond laser pulse; comparison of pulse-front tilting by transmissive vs. reflective diffraction gratings
