We unambiguously identify, in experiment and theory, an overlooked holographic interference pattern in strong-field ionization, dubbed “the spiral,” stemming from two trajectories where the potential and laser field are equally critical. Because of the strong interaction with the core of the two trajectories, the spiral could be employed as an optimal tool for probing the target after ionization and for revealing obfuscated phases in the bound states. We find that the spiral is responsible for interference carpets, formerly ascribed to direct trajectories, and that the carpet-interference condition is derived from the field symmetry. This case of mistaken identity may have prevented the spiral from being used as a holographic tool.

中文翻译：

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螺旋状全息结构：在强场电离中展开库仑扭曲轨道的干涉毯

在实验和理论上，我们明确地确定了强磁场电离中被忽略的全息干涉图样，被称为“螺旋形”，其源于两条轨迹，其中势场和激光场是同等重要的。由于与这两个轨迹的核心之间有很强的相互作用，因此可以将螺旋用作电离后探测目标和揭示束缚态中混淆相的最佳工具。我们发现，螺旋线是造成地毯干涉的原因，而地毯先前归因于直接轨迹，并且地毯干涉的条件是由场对称引起的。这种身份错误的情况可能阻止了螺旋被用作全息工具。