Femtosecond laser-driven ultrafast X-ray dynamics experimental station

Li Yifei; Wang Jinguang; Lu Xin; Liao Guoqian; Chen Liming; Li Yutong

doi:10.11884/HPLPB202638.250382

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Li Yifei, Wang Jinguang, Lu Xin, et al. Femtosecond laser-driven ultrafast X-ray dynamics experimental station[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250382

Citation:

Li Yifei, Wang Jinguang, Lu Xin, et al. Femtosecond laser-driven ultrafast X-ray dynamics experimental station[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250382

Li Yifei, Wang Jinguang, Lu Xin, et al. Femtosecond laser-driven ultrafast X-ray dynamics experimental station[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250382

Citation:

Li Yifei, Wang Jinguang, Lu Xin, et al. Femtosecond laser-driven ultrafast X-ray dynamics experimental station[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250382

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Femtosecond laser-driven ultrafast X-ray dynamics experimental station

doi: 10.11884/HPLPB202638.250382

Li Yifei^1
,,
Wang Jinguang¹,
Lu Xin^{1, 2},
Liao Guoqian^{1, 2},
Chen Liming³,
Li Yutong^{1, 2}

1.
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
2.
School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
3.
School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China

Received Date: 2025-10-31
Accepted Date: 2025-12-15
Rev Recd Date: 2025-12-17

Available Online: 2026-01-06

Abstract

Abstract

Background
Ultrashort and ultraintense laser-driven plasma X-ray sources offer femtosecond pulse durations, intrinsic spatiotemporal synchronization, compactness, and cost-effectiveness, serving as an important complement to traditional large-scale light sources and providing novel experimental tools for ultrafast dynamics research.
Purpose
Built upon the Synthetic Extreme Condition Facility (SECUF), the first open-access user experimental station in China based on high-power femtosecond lasers was established to deliver various types of ultrafast radiation sources, supporting studies on ultrafast material dynamics and frontier strong-field physics.
Methods
The station is equipped with a dual-beam titanium-sapphire laser system (3 TW/100 Hz and PW/1 shot/min) and multiple beamlines with multifunctional target chambers. Through interactions between the laser and solid targets, gas targets, or plasmas, various ultrafast light sources—such as Kα X-rays, Betatron radiation, and inverse Compton scattering—are generated. Platforms for strong-field terahertz pump–X-ray probe (TPXP) experiments and tabletop epithermal neutron resonance spectroscopy have also been developed.
Results
A highly stable ultrafast X-ray diffraction and TPXP platform was successfully established, enabling direct observation of strong-field terahertz-induced phase transition in VO₂. The world’s first tabletop high-resolution epithermal neutron resonance spectroscopy device was developed. On the PW beamline, hundred-millijoule-level intense terahertz radiation, efficient inverse Compton scattering, and high-charge electron beams were achieved.
Conclusions
Integrating high-performance lasers, diverse radiation sources, and advanced diagnostic platforms, this experimental station provides a flexible and efficient comprehensive facility for ultrafast science, promising to advance ultrafast dynamics research toward broader accessibility and more cutting-edge directions.
- PW femtosecond laser,
- laser–plasma interaction,
- ultrafast X-ray pulses,
- strong-field terahertz radiation,
- ultrafast applications.

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References(43)

References

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