Coherent all X-ray four wave mixing at core shell resonances
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| Auteurs principaux: | , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866929469028040704 |
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| author | Morillo-Candas, Ana Sofia Augustin, Sven Martin Prat, Eduard Sarracini, Antoine Knurr, Jonas Zerdane, Serhane Sun, Zhibin Yang, Ningchen Rebholz, Marc Zhang, Hankai Deng, Yunpei Xie, Xinhua Cannizzo, Andrea Al-Haddad, Andre Schnorr, Kirsten Andrea Ott, Christian Feurer, Thomas Bostedt, Christoph Pfeifer, Thomas Knopp, Gregor |
| author_facet | Morillo-Candas, Ana Sofia Augustin, Sven Martin Prat, Eduard Sarracini, Antoine Knurr, Jonas Zerdane, Serhane Sun, Zhibin Yang, Ningchen Rebholz, Marc Zhang, Hankai Deng, Yunpei Xie, Xinhua Cannizzo, Andrea Al-Haddad, Andre Schnorr, Kirsten Andrea Ott, Christian Feurer, Thomas Bostedt, Christoph Pfeifer, Thomas Knopp, Gregor |
| contents | Nonlinear wave mixing in the X-ray range can provide valuable insights into the structural and electron dynamics of atomic and molecular systems on ultrafast time scales, with state- and site-selectivity and atomic resolution. This promising experimental toolbox was so far limited by requiring at least one near-visible laser, thus preventing core-shell two-dimensional X-ray spectroscopy. In this work, we demonstrate the generation of background-free all-X-ray four-wave mixing (XFWM) signals from a dilute gaseous sample (Ne). The measured and simulated two-dimensional spectral maps ($ω_{\text{in}},ω_{\text{out}}$) show multiple contributions involving the coherent response from core electrons. Notably, two-color resonant XFWM signals, essential for generalized multi-color schemes that allow to locally probe the electronic excitation of matter, are observed in neutral Ne. Moreover, stimulated Ne$^+$ emission in each of the propagating X-ray pulses leads to an increase of the temporal coherence in a narrow-bandwidth, which results in the coherent mixing of three X-ray lasers. Preliminary X-ray excitation experiments making use of multi-color time-delayed X-ray pulses demonstrate temporal resolution capability and show a time dependency consistent with a signal dominated by resonant XFWM processes. This first all-X-ray four-wave-mixing approach represents a major breakthrough towards multidimensional X-ray correlation spectroscopy and the general application of nonlinear all-X-ray wave-mixing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_11881 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Coherent all X-ray four wave mixing at core shell resonances Morillo-Candas, Ana Sofia Augustin, Sven Martin Prat, Eduard Sarracini, Antoine Knurr, Jonas Zerdane, Serhane Sun, Zhibin Yang, Ningchen Rebholz, Marc Zhang, Hankai Deng, Yunpei Xie, Xinhua Cannizzo, Andrea Al-Haddad, Andre Schnorr, Kirsten Andrea Ott, Christian Feurer, Thomas Bostedt, Christoph Pfeifer, Thomas Knopp, Gregor Optics Atomic Physics Nonlinear wave mixing in the X-ray range can provide valuable insights into the structural and electron dynamics of atomic and molecular systems on ultrafast time scales, with state- and site-selectivity and atomic resolution. This promising experimental toolbox was so far limited by requiring at least one near-visible laser, thus preventing core-shell two-dimensional X-ray spectroscopy. In this work, we demonstrate the generation of background-free all-X-ray four-wave mixing (XFWM) signals from a dilute gaseous sample (Ne). The measured and simulated two-dimensional spectral maps ($ω_{\text{in}},ω_{\text{out}}$) show multiple contributions involving the coherent response from core electrons. Notably, two-color resonant XFWM signals, essential for generalized multi-color schemes that allow to locally probe the electronic excitation of matter, are observed in neutral Ne. Moreover, stimulated Ne$^+$ emission in each of the propagating X-ray pulses leads to an increase of the temporal coherence in a narrow-bandwidth, which results in the coherent mixing of three X-ray lasers. Preliminary X-ray excitation experiments making use of multi-color time-delayed X-ray pulses demonstrate temporal resolution capability and show a time dependency consistent with a signal dominated by resonant XFWM processes. This first all-X-ray four-wave-mixing approach represents a major breakthrough towards multidimensional X-ray correlation spectroscopy and the general application of nonlinear all-X-ray wave-mixing. |
| title | Coherent all X-ray four wave mixing at core shell resonances |
| topic | Optics Atomic Physics |
| url | https://arxiv.org/abs/2408.11881 |