arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2303.01360physics.optics
收藏

利用模态空谱波前恢复测量时空耦合

Measuring spatio-temporal couplings using modal spatio-spectral wavefront retrieval

N. Weiße, J. Esslinger, S. Howard, F. M. Foerster, F. Haberstroh, L. Doyle, P. Norreys, J. Schreiber, S. Karsch, A. Doepp

摘要:

时空耦合的知识,如脉冲前倾斜或曲率是重要的,以确定高功率激光的聚焦强度。诊断这些耦合的常用技术要么是定性的,要么需要数百次测量。在这里,我们提出了一个新的算法检索时空耦合,以及新颖的实验实现。我们的方法是基于Zernike-Taylor基的空间谱相位的表达,使我们能够直接量化常见的时空耦合系数。我们利用这种方法进行定量测量,使用一个简单的实验装置,由不同的带通滤波器在前面的Shack-Hartmann波前传感器。这种使用窄带滤波器(缩写为NPCON)的激光耦合的快速获取在现有设施中容易且便宜地实现。为此,我们提出了一个测量的时空耦合在ATLAS-3000拍瓦激光器使用我们的技术。

英文摘要:

Knowledge of spatio-temporal couplings such as pulse-front tilt or curvature is important to determine the focused intensity of high-power lasers. Common techniques to diagnose these couplings are either qualitative or require hundreds of measurements. Here we present both a new algorithm for retrieving spatio-temporal couplings, as well as novel experimental implementations. Our method is based on the expression of the spatio-spectral phase in terms of a Zernike-Taylor basis, allowing us to directly quantify the coefficients for common spatio-temporal couplings. We take advantage of this method to perform quantitative measurements using a simple experimental setup, consisting of different bandpass filters in front of a Shack-Hartmann wavefront sensor. This fast acquisition of laser couplings using narrowband filters, abbreviated FALCON, is easy and cheap to implement in existing facilities. To this end, we present a measurement of spatio-temporal couplings at the ATLAS-3000 petawatt laser using our technique.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑