论文标题
X射线辐射在游离电子激光器中的Attsond极化调制
Attosecond Polarisation Modulation of X-ray Radiation in a Free Electron Laser
论文作者
论文摘要
提出了一种在Attosecond TimeScales下生成具有调制极化的短波长电子激光输出的新方法。模拟显示了极化切换时间尺度，其数量级比当前的现状快四个数量级，并且在X射线波长处，接近时间约为$ 24 $ 〜toseconds的原子单位。这种极化控制在超快速原子和分子过程的研究中具有显着潜力。输出在正交线性或圆形偏振光之间交替，而无需任何偏振光元件。这有助于在与Fels相关的高亮度X射线波长下进行操作。由于该方法使用燃烧器配置，因此在激动人心的FEL设施中安装相对容易，从而大大扩展了他们的研究能力。
A new method to generate short wavelength Free Electron Laser output with modulated polarisation at attosecond timescales is presented. Simulations demonstrate polarisation switching timescales that are four orders of magnitude faster than the current state of the art and, at X-Ray wavelengths, approaching the atomic unit of time of approximately $24$~attoseconds. Such polarisation control has significant potential in the study of ultra-fast atomic and molecular processes. The output alternates between either orthogonal linear or circularly polarised light without the need for any polarising optical elements. This facilitates operation at the high brightness X-ray wavelengths associated with FELs. As the method uses an afterburner configuration it would be relatively easy to install at exciting FEL facilities, greatly expanding their research capability.
