论文标题
光电子全息图中的扭曲量子干扰具有椭圆极化场
Twisted quantum interference in photoelectron holography with elliptically polarized fields
论文作者
论文摘要
我们对超快光电子全息图受到椭圆极化场的影响，重点是量子干扰效应的系统分析。我们发现，外场和结合电位的相互作用会导致低椭圆率的扭曲全息图，并恢复众所周知的角度偏移以获得高椭圆率。使用库仑量子 - 轨道强场近似（CQSFA），我们评估场椭圆度如何影响特定的全息图模式，例如风扇和蜘蛛。外场和结合电位的相互作用导致风扇中的全息图，并导致蜘蛛中的对比度丧失。这种行为可以追溯到干扰电子轨迹，以及由于非呈椭圆度而导致的隧道概率变化。我们还使用强场近似（SFA）在分析上得出隧道时间，提供了预期干扰的椭圆机范围的估计值，并讨论如何构建如何构建连续电子动量分布来探索围绕原点的旋转对称性。
We perform a systematic analysis of how ultrafast photoelectron holography is influenced by an elliptically polarized field, with emphasis on quantum interference effects. We find that the interplay of the external field and the binding potential leads to twisted holographic patterns for low ellipticities and recover well-known angular offsets for high ellipticities. Using the Coulomb quantum-orbit strong-field approximation (CQSFA), we assess how the field ellipticity affects specific holographic patterns, such as the fan and the spider. The interplay of the external field and the binding potential leads to twisted holographic patterns in the fan, and to loss of contrast in the spider. This behavior can be traced back to interfering electron trajectories, and unequal changes in tunneling probability due to non-vanishing ellipticity. We also derive tunneling times analytically using the strong-field approximation (SFA), provide estimates for ellipticy ranges for which interference is expected to be prominent, and discuss how to construct continuous electron momentum distributions exploring the rotation symmetry around the origin.
