论文标题
时空脉冲表征，远场梁互相关
Spatiotemporal pulse characterization with far-field beamlet cross-correlation
论文作者
论文摘要
我们提出了一种新颖的，直接的方法，用于超短激光脉冲的时空表征。该方法采用远场干涉法和基于本文中得出的理论基础的逆傅立叶变换光谱法。它的简单性很突出：它几乎不需要非标准的光学元素和简单的分析算法。该方法用于测量我们100 TW类激光器的时空强度，并测试屈光双表作为脉冲前曲率（PFC）的抑制器的功效。测得的低阶时空耦合与射线追踪模拟一致。此外，我们演示了一种从中央方法得出的单发测量技术，该技术允许通过脉冲前倾斜（PFT）最小化对压缩机的快速和精确排列，并以最佳的屈光度双压力定位以抑制PFC。
We present a novel, straightforward method for spatiotemporal characterization of ultra-short laser pulses. The method employs far-field interferometry and inverse Fourier transform spectroscopy, built on the theoretical basis derived in this paper. It stands out in its simplicity: it requires few non-standard optical elements and simple analysis algorithms. This method was used to measure the space-time intensity of our 100 TW class laser and to test the efficacy of a refractive doublet as a suppressor of pulse front curvature (PFC). The measured low-order spatiotemporal couplings agreed with ray-tracing simulations. In addition, we demonstrate a one-shot measurement technique, derived from our central method, which allows for quick and precise alignment of the compressor by pulse front tilt (PFT) minimization and for optimal refractive doublet positioning for the suppression of PFC.
