Self-Synchronized Terahertz and X-Ray Free-Electron Lasers from a Single Pre-Bunched Electron Beam

[2608.15106] Self-Synchronized Terahertz and X-Ray Free-Electron Lasers from a Single Pre-Bunched Electron Beam Skip to main content Search Submit Donate Log in Search arXiv Press Enter to search · Advanced search Physics > Accelerator Physics arXiv:2608.15106 (physics) [Submitted on 15 Aug 2026] Title: Self-Synchronized Terahertz and X-Ray Free-Electron Lasers from a Single Pre-Bunched Electron Beam Authors: Yin Kang , Kaiqing Zhang , Zhen Wang , Cheng Yu , Zhangfeng Gao , Wencai Cheng , Hang Luo , Yue Wang , Hanghua Xu , Xiaoqing Liu , Jinguo Wang , Huan Zhao , Yanyan Zhu , Yongmei Wen , Fei Gao , Yangyang Lei , Chengcheng Xiao , Liping Sun , Yongfang Liu , Jiaqiang Xu , Weiyi Yin , Xingtao Wang , Taihe Lan , Zheng Qi , Tao Liu , Zhi Guo , Bin Li , Chao Feng , Bo Liu , Zhentang Zhao View a PDF of the paper titled Self-Synchronized Terahertz and X-Ray Free-Electron Lasers from a Single Pre-Bunched Electron Beam, by Yin Kang and 29 other authors View PDF HTML (experimental) Abstract: Ultrafast pump-probe spectroscopy combining intense terahertz (THz) and X-ray pulses is a critical tool for investigating complex structural and electronic dynamics in materials. However, current setups combining THz sources and X-ray free-electron lasers (FELs) often suffer from high system complexity, inherent timing jitter, or limited THz pulse properties. Here, we experimentally demonstrate the generation of intrinsically synchronized, strong-field, narrow-band THz and X-ray FELs from a single pre-bunched electron beam. Sequentially passing the beam through X-ray and THz amplifiers reveals a highly synergistic process: the initial periodic THz density modulation notably boosts the X-ray FEL pulse energy, while robustly surviving the intense X-ray emission to drive high-power, narrow-band THz radiation. Originating from the same electron bunch, the two pulses inherently maintain a precise, constant time delay. This jitter-free scheme establishes a highly reliable platform tailored for both X-ray-pump/THz-probe and THz-pump/X-ray-probe experiments. Subjects: Accelerator Physics (physics.acc-ph) Cite as: arXiv:2608.15106 [physics.acc-ph] (or arXiv:2608.15106v1 [physics.acc-ph] for this version) https://doi.org/10.48550/arXiv.2608.15106 Focus to learn more arXiv-issued DOI via DataCite Submission history From: Yin Kang [ view email ] [v1] Sat, 15 Aug 2026 08:10:48 UTC (1,316 KB) Full-text links: Access Paper: View a PDF of the paper titled Self-Synchronized Terahertz and X-Ray Free-Electron Lasers from a Single Pre-Bunched Electron Beam, by Yin Kang and 29 other authors View PDF HTML (experimental) TeX Source view license Current browse context: physics.acc-ph < prev | next > new | recent | 2026-08 Change to browse by: physics References & Citations INSPIRE HEP NASA ADS Google Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... Data provided by: Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer ( What is the Explorer? ) Connected Papers Toggle Connected Papers ( What is Connected Papers? ) Litmaps Toggle Litmaps ( What is Litmaps? ) scite.ai Toggle scite Smart Citations ( What are Smart Citations? ) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv ( What is alphaXiv? ) Links to Code Toggle CatalyzeX Code Finder for Papers ( What is CatalyzeX? ) DagsHub Toggle DagsHub ( What is DagsHub? ) GotitPub Toggle Gotit.pub ( What is GotitPub? ) Huggingface Toggle Hugging Face ( What is Huggingface? ) ScienceCast Toggle ScienceCast ( What is ScienceCast? ) Demos Demos Replicate Toggle Replicate ( What is Replicate? ) Spaces Toggle Hugging Face Spaces ( What is Spaces? ) Spaces Toggle TXYZ.AI ( What is TXYZ.AI? ) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower ( What are Influence Flowers? ) Core recommender toggle CORE Recommender ( What is CORE? ) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs . Which authors of this paper are endorsers? | Disable MathJax ( What is MathJax? ) We gratefully acknowledge support from our major funders , member institutions , , and all contributors. About · Help · Contact · Subscribe · Copyright · Privacy · Accessibility · Operational Status (opens in new tab) Major funding support from

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