This work demonstrates nanoscale magnetic imaging using bright circularly polarized high-harmonic radiation. We utilize the magneto-optical contrast of worm-like magnetic domains in a Co/Pd multilayer structure, obtaining quantitative amplitude and phase maps by lensless imaging. A diffraction-limited spatial resolution of 49 nm is achieved with iterative phase reconstruction enhanced by a holographic mask. Harnessing the exceptional coherence of high harmonics, this approach will facilitate quantitative, element-specific, and spatially resolved studies of ultrafast magnetization dynamics, advancing both fundamental and applied aspects of nanoscale magnetism.

中文翻译：

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使用圆偏振高谐波辐射的纳米级磁成像。

这项工作演示了使用明亮的圆极化高谐波辐射的纳米级磁成像。我们利用Co / Pd多层结构中蠕虫状磁畴的磁光对比，通过无透镜成像获得定量的振幅和相位图。通过全息掩模增强的迭代相位重建，可实现49 nm的衍射极限空间分辨率。利用高次谐波的出色相干性，这种方法将有助于对超快磁化动力学进行定量，针对特定元素和空间分辨的研究，从而推动纳米级磁性的基础和应用方面的发展。