论文标题
单发完全时空strehl超短激光脉冲的比率 - 理论
Single-shot complete spatiotemporal Strehl ratio metrology of ultrashort laser pulses -- theory
论文作者
论文摘要
现在，焦点的超高强度飞秒激光器通常用于具有超过10^18W/cm^2的峰值强度的带电颗粒的相对论运动。这样的高场实验对峰强度的值非常敏感。因此，对脉冲强度的精确知识是正确解释实验数据的关键先决条件。精确测量能量，光谱和空间曲线已建立，峰强度评估，然后仅需要确定时空静态比率。在这里，我提出了一种基于对非线性效应的简单分析的新方法。它诊断出所有时间，时空和时空耦合扭曲。例如，可以通过使用相对论的表面谐波生成来实现此方法。
Ultra-high intensity femtosecond lasers at focus are now routinely used for relativistic motion of charged particles with peak intensities over 10^18W/cm^2. Such high-field experiments are very sensitive to the value of the peak intensity. Therefore, precise knowledge of the pulse intensity is a key prerequisite for the correct interpretation of experimental data. Accurate measurement of energy, spectral and spatial profiles being well established, peak intensity evaluation then only requires the determination of the spatiotemporal Strehl ratio. Here I propose a new method based on a simple analysis of a nonlinear effect. It diagnoses all the temporal, spatial and spatiotemporal coupling distortions. This method can even be implemented on target by using relativistic surface harmonic generation for example.
