Werby, N;
Maxwell, AS;
Forbes, R;
Bucksbaum, PH;
Faria, CFDM;
(2021)
Dissecting subcycle interference in photoelectron holography.
Physical Review A
, 104
(1)
, Article 013109. 10.1103/PhysRevA.104.013109.
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Abstract
Multipath holographic interference in strong-field quantum tunnel ionization is key to revealing subangstrom attosecond dynamics for molecular movies. This critical subcycle motion is often obscured by longer timescale effects such as ring-shaped patterns that appear in above-threshold ionization (ATI). In the present work, we overcome this problem by combining two techniques in theory and experimental analysis: unit-cell averaging and time-filtering data and simulations. Together these suppress ATI rings and enable an unprecedented highly detailed quantitative match between strong-field ionization experiments in argon and the Coulomb-quantum orbit strong-field approximation (CQSFA) theory. Velocity map images reveal fine modulations on the holographic spiderlike interference fringes that form near the polarization axis. CQSFA theory traces this to the interference of three types of electron pathways. The level of agreement between experiment and theory allows sensitive determination of quantum phase differences and symmetries, providing an important tool for quantitative dynamical imaging in quantum systems.
| Type: | Article |
|---|---|
| Title: | Dissecting subcycle interference in photoelectron holography |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevA.104.013109 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevA.104.013109 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10132360 |
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