Marceau Claude, Makhija Varun, Platzer Dominique, Naumov A Yu, Corkum P B, Stolow Albert, Villeneuve D M, Hockett Paul
Joint Attosecond Science Laboratory, National Research Council of Canada and University of Ottawa, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada.
Department of Physics, University of Ottawa, 150 Louis Pasteur, Ottawa, Ontario K1N 6N5, Canada.
Phys Rev Lett. 2017 Aug 25;119(8):083401. doi: 10.1103/PhysRevLett.119.083401. Epub 2017 Aug 22.
Photoionization of molecular species is, essentially, a multipath interferometer with both experimentally controllable and intrinsic molecular characteristics. In this work, XUV photoionization of impulsively aligned molecular targets (N_{2}) is used to provide a time-domain route to "complete" photoionization experiments, in which the rotational wave packet controls the geometric part of the photoionization interferometer. The data obtained is sufficient to determine the magnitudes and phases of the ionization matrix elements for all observed channels, and to reconstruct molecular frame interferograms from lab frame measurements. In principle, this methodology provides a time-domain route to complete photoionization experiments and the molecular frame, which is generally applicable to any molecule (no prerequisites), for all energies and ionization channels.
分子物种的光电离本质上是一种具有实验可控和固有分子特性的多路径干涉仪。在这项工作中，对脉冲排列的分子靶标（N₂）进行极紫外光电离，以提供一条时域途径来进行“完整”的光电离实验，其中旋转波包控制着光电离干涉仪的几何部分。所获得的数据足以确定所有观测通道的电离矩阵元的大小和相位，并从实验室坐标系测量中重建分子坐标系干涉图。原则上，这种方法提供了一条时域途径来完成光电离实验和分子坐标系，该方法通常适用于任何分子（无先决条件），适用于所有能量和电离通道。
