Resolving Rydberg-Electron Recapture Dynamics via Laser-driven Frustrated Tunneling Ionization
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909555699482624 |
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| author | Peng, Sainan Chen, Yudong Li, Yang Fan, Guangyu Xie, Xinhua He, Feng Tao, Zhensheng |
| author_facet | Peng, Sainan Chen, Yudong Li, Yang Fan, Guangyu Xie, Xinhua He, Feng Tao, Zhensheng |
| contents | By employing two-color counter-rotating circularly polarized laser fields, we investigate the dynamics of electron recapture into Rydberg states under strong, ultrashort laser pulses, probed via coherent extreme-ultraviolet free-induction decay (XFID). Our study reveals significant distinctions between XFID and above-threshold high-order harmonic generation in terms of their ellipticity dependence on the driving-laser waveforms, yield variations with the laser-intensity ratios, and sensitivity to the driving-laser ellipticity. All these differences arise from the fundamentally distinct electron trajectories underlying the two processes. More importantly, our findings provide compelling evidence that Rydberg-electron recapture predominantly occurs at the end of the driving laser field, offering the first direct experimental confirmation of this long-proposed mechanism. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_19007 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Resolving Rydberg-Electron Recapture Dynamics via Laser-driven Frustrated Tunneling Ionization Peng, Sainan Chen, Yudong Li, Yang Fan, Guangyu Xie, Xinhua He, Feng Tao, Zhensheng Optics By employing two-color counter-rotating circularly polarized laser fields, we investigate the dynamics of electron recapture into Rydberg states under strong, ultrashort laser pulses, probed via coherent extreme-ultraviolet free-induction decay (XFID). Our study reveals significant distinctions between XFID and above-threshold high-order harmonic generation in terms of their ellipticity dependence on the driving-laser waveforms, yield variations with the laser-intensity ratios, and sensitivity to the driving-laser ellipticity. All these differences arise from the fundamentally distinct electron trajectories underlying the two processes. More importantly, our findings provide compelling evidence that Rydberg-electron recapture predominantly occurs at the end of the driving laser field, offering the first direct experimental confirmation of this long-proposed mechanism. |
| title | Resolving Rydberg-Electron Recapture Dynamics via Laser-driven Frustrated Tunneling Ionization |
| topic | Optics |
| url | https://arxiv.org/abs/2502.19007 |