Time-resolved 3D imaging of ultrafast spin-orbit wave packet dynamics

被引：13

作者：

Bayer, Tim ^{[1
]}

Graefing, Daniela ^{[1
]}

Kerbstadt, Stefanie ^{[1
]}

Pengel, Dominik ^{[1
]}

Eickhoff, Kevin ^{[1
]}

Englert, Lars ^{[1
]}

Wollenhaupt, Matthias ^{[1
]}

机构：

[1] Carl von Ossietzky Univ Oldenburg, Inst Phys, Carl von Ossietzky Str 9-11, D-26129 Oldenburg, Germany

来源：

NEW JOURNAL OF PHYSICS | 2019年 / 21卷 / 03期

关键词：

bichromatic polarization pulse shaping; photoelectron imaging tomography; ultrafast spin-orbit wave packet dynamics; femtosecond two-color pump-probe study; multiphoton ionization; FINE-STRUCTURE LEVELS; PUMP-PROBE; POLARIZATION; PHOTOELECTRON; SPECTROSCOPY; IONIZATION; PRECESSION; EXCITATION; FIELDS;

D O I：

10.1088/1367-2630/aafb87

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We combine bichromatic polarization pulse shaping with photoelectron imaging tomography for time-resolved spatial imaging of ultrafast spin-orbit wave packet (SOWP) dynamics in atoms. Polarization-shaped two-color pump-probe sequences are generated by spectral amplitude and phase modulation of a femtosecond input pulse and used to excite SOWPs in the potassium 4p fine-structure doublet. By selecting different spectral bands for pump and probe pulse, we achieve interference-free detection of the spatiotemporal SOWP dynamics. Using tomographic techniques, we reconstruct the three-dimensional photoelectron momentum distribution (3D-ED) created by the probe pulse. Time-resolved measurement of the 3D-ED reveals the orbital realignment dynamics induced by spin-orbit interaction in the neutral atom.

引用

页数：16

共 49 条

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