一种用于超短激光脉冲波前光谱分辨的简单少样本方法
光学
2024-04-11 v2 仪器与探测器
摘要
我们提出一种用于超短脉冲时空-光谱表征的新颖且直接的方法。这种极小侵入性方法依赖于在聚焦光学元件前的光束路径中放置带特殊排布针孔的光阑,并从焦点处产生的散斑图样中反演光谱分辨的激光波前。我们通过精确反演球透镜引入的色差(如脉冲前沿倾斜、脉冲前沿曲率及高阶像差)来检验该新方法的有效性。本方法的简易性与可扩展性,加之其与单发操作的兼容性,使其成为高强度激光装置中一种有前景的新标准诊断工具候选。
引用
@article{arxiv.2307.15799,
title = {Simple few-shot method for spectrally resolving the wavefront of an ultrashort laser pulse},
author = {Slava Smartsev and Aaron Liberman and Igor A. Andriyash and Antoine Cavagna and Alessandro Flacco and Camilla Giaccaglia and Jaismeen Kaur and Joséphine Monzac and Sheroy Tata and Aline Vernier and Victor Malka and Rodrigo Lopez-Martens and Jérôme Faure},
journal= {arXiv preprint arXiv:2307.15799},
year = {2024}
}
备注
Algorithm updated: near-field intensity measurement no longer needed. Revised version extracts phase and amplitude at pinhole positions. Wavefronts nearly unchanged. Paper adjusted, typos corrected, and cosmetic figure changes made