High-Efficiency Plasma-Based Compressor for Ultrafast Soft X-ray Free-Electron Lasers
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arXiv
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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866910974789812224 |
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| author | Wang, Mingchang Zeng, Li Zhang, Bingbing Zhu, Qinghao Shen, Xiaozhe Wang, Xiaofan Li, Qinming Zhang, Weiqing |
| author_facet | Wang, Mingchang Zeng, Li Zhang, Bingbing Zhu, Qinghao Shen, Xiaozhe Wang, Xiaofan Li, Qinming Zhang, Weiqing |
| contents | The generation of intense, femtosecond-scale X-ray pulses is crucial for probing matter under extreme temporal and field conditions. Current chirped-pulse amplification (CPA) techniques in free-electron lasers (FELs), however, face efficiency limitations in the soft X-ray regime due to the inherent constraints of conventional optical compressors. To address this challenge, we propose a high-efficiency plasma-based compressor utilizing highly ionized noble gas plasma. Exploiting strong refractive index dispersion near ionic resonances, this scheme achieves over 70% transmission efficiency around 5.2 nm, and is extendable to other highly charged ions for operation across the soft X-ray to vacuum ultraviolet range. Simulations demonstrate that a 25 fs FEL pulse can be compressed to 1.4 fs with peak power boosted to over 100 GW, while maintaining high energy throughput. This approach overcomes the long-standing efficiency bottleneck of soft X-ray CPA and opens a scalable path toward compact, high-brightness attosecond FEL sources. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_16768 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | High-Efficiency Plasma-Based Compressor for Ultrafast Soft X-ray Free-Electron Lasers Wang, Mingchang Zeng, Li Zhang, Bingbing Zhu, Qinghao Shen, Xiaozhe Wang, Xiaofan Li, Qinming Zhang, Weiqing Accelerator Physics Optics Plasma Physics The generation of intense, femtosecond-scale X-ray pulses is crucial for probing matter under extreme temporal and field conditions. Current chirped-pulse amplification (CPA) techniques in free-electron lasers (FELs), however, face efficiency limitations in the soft X-ray regime due to the inherent constraints of conventional optical compressors. To address this challenge, we propose a high-efficiency plasma-based compressor utilizing highly ionized noble gas plasma. Exploiting strong refractive index dispersion near ionic resonances, this scheme achieves over 70% transmission efficiency around 5.2 nm, and is extendable to other highly charged ions for operation across the soft X-ray to vacuum ultraviolet range. Simulations demonstrate that a 25 fs FEL pulse can be compressed to 1.4 fs with peak power boosted to over 100 GW, while maintaining high energy throughput. This approach overcomes the long-standing efficiency bottleneck of soft X-ray CPA and opens a scalable path toward compact, high-brightness attosecond FEL sources. |
| title | High-Efficiency Plasma-Based Compressor for Ultrafast Soft X-ray Free-Electron Lasers |
| topic | Accelerator Physics Optics Plasma Physics |
| url | https://arxiv.org/abs/2505.16768 |