State-resolved attosecond reversible and irreversible dynamics in strong optical fields
Strong-field ionization (SFI) is a key process for accessing real-time quantum dynamics of electrons on the attosecond timescale. The theoretical foundation of SFI was pioneered in the 1960s, and later refined by various analytical models. While asymptotic ionization rates predicted by these models...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2017
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| Online Access: | https://hdl.handle.net/10356/85106 http://hdl.handle.net/10220/43641 |
| _version_ | 1826119559005863936 |
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| author | Sabbar, Mazyar Timmers, Henry Chen, Yi-Jen Pymer, Allison K. Loh, Zhi-Heng Sayres, Scott G. Pabst, Stefan Santra, Robin Leone, Stephen R. |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Sabbar, Mazyar Timmers, Henry Chen, Yi-Jen Pymer, Allison K. Loh, Zhi-Heng Sayres, Scott G. Pabst, Stefan Santra, Robin Leone, Stephen R. |
| author_sort | Sabbar, Mazyar |
| collection | NTU |
| description | Strong-field ionization (SFI) is a key process for accessing real-time quantum dynamics of electrons on the attosecond timescale. The theoretical foundation of SFI was pioneered in the 1960s, and later refined by various analytical models. While asymptotic ionization rates predicted by these models have been tested to be in reasonable agreement for a wide range of laser parameters, predictions for SFI on the sub-laser-cycle timescale are either beyond the scope of the models or show strong qualitative deviations from full quantum-mechanical simulations. Here, using the unprecedented state specificity of attosecond transient absorption spectroscopy, we follow the real-time SFI process of the two valence spin–orbit states of xenon. The results reveal that the irreversible tunnelling contribution is accompanied by a reversible electronic population that exhibits an observable spin–orbit-dependent phase delay. A detailed theoretical analysis attributes this observation to transient ground-state polarization, an unexpected facet of SFI that cannot be captured by existing analytical models that focus exclusively on the production of asymptotic electron/ion yields. |
| first_indexed | 2024-10-01T05:02:01Z |
| format | Journal Article |
| id | ntu-10356/85106 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:02:01Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/851062023-02-28T19:31:25Z State-resolved attosecond reversible and irreversible dynamics in strong optical fields Sabbar, Mazyar Timmers, Henry Chen, Yi-Jen Pymer, Allison K. Loh, Zhi-Heng Sayres, Scott G. Pabst, Stefan Santra, Robin Leone, Stephen R. School of Physical and Mathematical Sciences Centre for Optical Fibre Technology The Photonics Institute Attosecond science Atomic and molecular interactions with photons Strong-field ionization (SFI) is a key process for accessing real-time quantum dynamics of electrons on the attosecond timescale. The theoretical foundation of SFI was pioneered in the 1960s, and later refined by various analytical models. While asymptotic ionization rates predicted by these models have been tested to be in reasonable agreement for a wide range of laser parameters, predictions for SFI on the sub-laser-cycle timescale are either beyond the scope of the models or show strong qualitative deviations from full quantum-mechanical simulations. Here, using the unprecedented state specificity of attosecond transient absorption spectroscopy, we follow the real-time SFI process of the two valence spin–orbit states of xenon. The results reveal that the irreversible tunnelling contribution is accompanied by a reversible electronic population that exhibits an observable spin–orbit-dependent phase delay. A detailed theoretical analysis attributes this observation to transient ground-state polarization, an unexpected facet of SFI that cannot be captured by existing analytical models that focus exclusively on the production of asymptotic electron/ion yields. ASTAR (Agency for Sci., Tech. and Research, S’pore) MOE (Min. of Education, S’pore) Accepted version 2017-08-28T08:52:07Z 2019-12-06T15:57:11Z 2017-08-28T08:52:07Z 2019-12-06T15:57:11Z 2017 Journal Article Sabbar, M., Timmers, H., Chen, Y.-J., Pymer, A. K., Loh, Z.-H., Sayres, S. G., et al. (2017). State-resolved attosecond reversible and irreversible dynamics in strong optical fields. Nature Physics, 13(5), 472-478. 1745-2473 https://hdl.handle.net/10356/85106 http://hdl.handle.net/10220/43641 10.1038/nphys4027 en Nature Physics © 2017 Macmillan Publishers Limited, part of Springer Nature. This is the author created version of a work that has been peer reviewed and accepted for publication by Nature Physics, Macmillan Publishers Limited. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1038/nphys4027]. 20 p. application/pdf |
| spellingShingle | Attosecond science Atomic and molecular interactions with photons Sabbar, Mazyar Timmers, Henry Chen, Yi-Jen Pymer, Allison K. Loh, Zhi-Heng Sayres, Scott G. Pabst, Stefan Santra, Robin Leone, Stephen R. State-resolved attosecond reversible and irreversible dynamics in strong optical fields |
| title | State-resolved attosecond reversible and irreversible dynamics in strong optical fields |
| title_full | State-resolved attosecond reversible and irreversible dynamics in strong optical fields |
| title_fullStr | State-resolved attosecond reversible and irreversible dynamics in strong optical fields |
| title_full_unstemmed | State-resolved attosecond reversible and irreversible dynamics in strong optical fields |
| title_short | State-resolved attosecond reversible and irreversible dynamics in strong optical fields |
| title_sort | state resolved attosecond reversible and irreversible dynamics in strong optical fields |
| topic | Attosecond science Atomic and molecular interactions with photons |
| url | https://hdl.handle.net/10356/85106 http://hdl.handle.net/10220/43641 |
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