Elucidating the origins of multimode vibrational coherences of polyatomic molecules induced by intense laser fields
Strong-field laser–molecule interaction forms much of the basis for initiating and probing ultrafast quantum dynamics. Previous studies aimed at elucidating the origins of vibrational coherences induced by intense laser fields have been confined to diatomic molecules. Furthermore, in all cases exami...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2018
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| Online Access: | https://hdl.handle.net/10356/88582 http://hdl.handle.net/10220/44662 |
| _version_ | 1811689978572308480 |
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| author | Shi, Fan Yang, Minghui Loh, Zhi-Heng Wei, Zhengrong Li, Jialin Wang, Lin See, Soo Teck Jhon, Mark Hyunpong Zhang, Yingfeng |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Shi, Fan Yang, Minghui Loh, Zhi-Heng Wei, Zhengrong Li, Jialin Wang, Lin See, Soo Teck Jhon, Mark Hyunpong Zhang, Yingfeng |
| author_sort | Shi, Fan |
| collection | NTU |
| description | Strong-field laser–molecule interaction forms much of the basis for initiating and probing ultrafast quantum dynamics. Previous studies aimed at elucidating the origins of vibrational coherences induced by intense laser fields have been confined to diatomic molecules. Furthermore, in all cases examined to date, vibrational wave packet motion is found to be induced by R-selective depletion; wave packet motion launched by bond softening, though theoretically predicted, remains hitherto unobserved. Here we employ the exquisite sensitivity of femtosecond extreme ultraviolet absorption spectroscopy to sub-picometer structural changes to observe both bond softening-induced vibrational wave packets, launched by the interaction of intense laser pulses with iodomethane, as well as multimode vibrational motion of the parent ion produced by strong-field ionization. In addition, we show that signatures of coherent vibrational motion in the time-dependent extreme ultraviolet absorption spectra directly furnish vibronic coupling strengths involving core-level transitions, from which geometrical parameters of transient core-excited states are extracted. |
| first_indexed | 2024-10-01T05:56:41Z |
| format | Journal Article |
| id | ntu-10356/88582 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:56:41Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/885822023-02-28T19:35:47Z Elucidating the origins of multimode vibrational coherences of polyatomic molecules induced by intense laser fields Shi, Fan Yang, Minghui Loh, Zhi-Heng Wei, Zhengrong Li, Jialin Wang, Lin See, Soo Teck Jhon, Mark Hyunpong Zhang, Yingfeng School of Physical and Mathematical Sciences Centre for Optical Fibre Technology The Photonics Institute Atomic Absorption Spectroscopy Molecular Analysis Strong-field laser–molecule interaction forms much of the basis for initiating and probing ultrafast quantum dynamics. Previous studies aimed at elucidating the origins of vibrational coherences induced by intense laser fields have been confined to diatomic molecules. Furthermore, in all cases examined to date, vibrational wave packet motion is found to be induced by R-selective depletion; wave packet motion launched by bond softening, though theoretically predicted, remains hitherto unobserved. Here we employ the exquisite sensitivity of femtosecond extreme ultraviolet absorption spectroscopy to sub-picometer structural changes to observe both bond softening-induced vibrational wave packets, launched by the interaction of intense laser pulses with iodomethane, as well as multimode vibrational motion of the parent ion produced by strong-field ionization. In addition, we show that signatures of coherent vibrational motion in the time-dependent extreme ultraviolet absorption spectra directly furnish vibronic coupling strengths involving core-level transitions, from which geometrical parameters of transient core-excited states are extracted. ASTAR (Agency for Sci., Tech. and Research, S’pore) MOE (Min. of Education, S’pore) Published version 2018-04-10T06:17:58Z 2019-12-06T17:06:35Z 2018-04-10T06:17:58Z 2019-12-06T17:06:35Z 2017 Journal Article Wei, Z., Li, J., Wang, L., See, S. T., Jhon, M. H., Zhang, Y., Shi, F., et al. (2017). Elucidating the origins of multimode vibrational coherences of polyatomic molecules induced by intense laser fields. Nature Communications, 8(1), 735-. https://hdl.handle.net/10356/88582 http://hdl.handle.net/10220/44662 10.1038/s41467-017-00848-2 en Nature Communications © 2017 The Author(s) (Nature Publishing Group). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. 7 p. application/pdf |
| spellingShingle | Atomic Absorption Spectroscopy Molecular Analysis Shi, Fan Yang, Minghui Loh, Zhi-Heng Wei, Zhengrong Li, Jialin Wang, Lin See, Soo Teck Jhon, Mark Hyunpong Zhang, Yingfeng Elucidating the origins of multimode vibrational coherences of polyatomic molecules induced by intense laser fields |
| title | Elucidating the origins of multimode vibrational coherences of polyatomic molecules induced by intense laser fields |
| title_full | Elucidating the origins of multimode vibrational coherences of polyatomic molecules induced by intense laser fields |
| title_fullStr | Elucidating the origins of multimode vibrational coherences of polyatomic molecules induced by intense laser fields |
| title_full_unstemmed | Elucidating the origins of multimode vibrational coherences of polyatomic molecules induced by intense laser fields |
| title_short | Elucidating the origins of multimode vibrational coherences of polyatomic molecules induced by intense laser fields |
| title_sort | elucidating the origins of multimode vibrational coherences of polyatomic molecules induced by intense laser fields |
| topic | Atomic Absorption Spectroscopy Molecular Analysis |
| url | https://hdl.handle.net/10356/88582 http://hdl.handle.net/10220/44662 |
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