论文标题
由电介质激光加速器驱动的超光线辐射辐射器
Ultra-bright Coherent Undulator Radiation Driven by Dielectric Laser Accelerator
论文作者
论文摘要
预计以光频率和GHz脉搏速率运行的介电激光加速器有望在高能时产生具有中等束电流的attosec电子束。对于相对论电子，Attosec束的空间长度为几纳米，非常适合在VUV，EUV和X射线光谱中产生高亮度超平稳。我们的研究表明，即使在0.1〜3 keV光子能量范围内的同步器中，来自介电激光加速器的短束光束驱动的相干起射器辐射的光彩与介电激光加速器的光束功率相当于一百万次的同步器的范围。当将比较的光彩归一化为电子束功率时，提出的相干解散辐射源将成为整个VUV，EUV和软X射线光谱的地球上最亮的源。
A dielectric laser accelerator, operating at optical frequencies and GHz pulse rate, is expected to produce attosec electron bunches with a moderate beam current at high energy. For relativistic electrons, the attosec bunch has a spatial length of a few nanometers, which is well suited for generating high-brightness superradiance in the VUV, EUV, and x-ray spectra. Our study shows that the brilliance of coherent undulator radiation driven by a short-bunch beam with 1~10 fC bunch charge from a dielectric laser accelerator is comparable to or higher than that of a synchrotron in the 0.1 ~ 3 keV photon energy range, even though the beam power of the dielectric laser accelerator is about a million times lower than that of a synchrotron. When the brilliance under comparison is normalized to the electron beam power, the proposed coherent undulator radiation source becomes the brightest source on earth across the whole VUV, EUV, and soft x-ray spectrum.
