Journal
NATURE PHYSICS
Volume 4, Issue 7, Pages 545-549Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/nphys964
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Funding
- Engineering and Physical Sciences Research Council [GR/S22424/01, EP/C530772/2, EP/C530772/1] Funding Source: researchfish
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Controlling attosecond electron wave packets and soft X-ray pulses represents a formidable challenge of general implication to many areas of science(1-4). A strong laser field interacting with atoms or molecules drives ultrafast intra-atomic/molecular electron wave packets on a subfemtosecond timescale, resulting in the emission of attosecond bursts of extreme-ultraviolet light(5,6). Controlling the intra-atomic/molecular electron dynamics enables steering of the attosecond emission(7,8). Here, we carry out a coherent control in linear molecules, where the interaction of the laser-driven electron wave packet with the core leads to quantum interferences(9-12). We demonstrate that these interferences can be finely controlled by turning the molecular axis relative to the laser polarization, that is, changing the electron recollision angle. The wave-packet coulombic distortion modifies the spectral phase jump measured in the extreme-ultraviolet emission. Our attosecond control of the interference results in attosecond pulse shaping, useful for future applications in ultrafast coherent control of atomic and molecular processes.
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