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Generating high repetition rate X-ray attosecond pulses in a diffraction limited storage ring
Weihang Liu1,2, Yu Zhao1,2, Yi Jiao3
1Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China.
Scientific Reports
|August 28, 2023
Summary
Researchers generated attosecond pulses using a novel microbunching scheme in a storage ring. This method produces chirp-free, high-flux light for studying electron dynamics in matter.
Area of Science:
- Attosecond science
- Quantum optics
- Materials science
Background:
- Precise control of electron motion requires ultrashort light pulses.
- Existing methods face limitations in duration, repetition rate, or flux.
Purpose of the Study:
- To develop a method for generating high-flux, attosecond light pulses in the water window region.
- To enable advanced studies of electron dynamics in atoms, molecules, and nanostructures.
Main Methods:
- Utilized angular dispersion-induced microbunching.
- Employed a few-cycle laser within a straight section of a diffraction-limited storage ring.
- Simulations based on the Southern Advanced Photon Source.
Main Results:
- Generated coherent attosecond pulses with a minimum duration of 50 attoseconds (as).
- Achieved a maximum repetition rate of a few MHz.
- Obtained a maximum average flux of approximately [Formula: see text] photons/s/1% bandwidth.
Conclusions:
- The proposed method successfully generates chirp-free, Fourier transform limited attosecond pulses.
- This technique offers a promising avenue for advanced attosecond spectroscopy.
- The high flux and repetition rate are suitable for tracking ultrafast electron dynamics.
