Generation of bright isolated attosecond soft X-ray pulses driven by multicycle midinfrared lasers

@article{Chen2014GenerationOB,
  title={Generation of bright isolated attosecond soft X-ray pulses driven by multicycle midinfrared lasers},
  author={Ming-Chang Chen and Christopher A. Mancuso and Carlos Hern{\'a}ndez-Garc{\'i}a and Franklin J. Dollar and Benjamin R Galloway and D. Popmintchev and Pei-Chi Huang and Barry C. Walker and Luis Plaja and A Jaroń-Becker and Andreas Becker and Margaret M. Murnane and Henry C. Kapteyn and T Popmintchev},
  journal={Proceedings of the National Academy of Sciences},
  year={2014},
  volume={111},
  pages={E2361 - E2367}
}
Significance Attosecond pulses driven by femtosecond lasers make it possible to capture the fastest electron dynamics in molecules and materials. To date, attosecond pulses driven by widely available 800-nm lasers were limited to the extreme UV region of the spectrum, which restricted the range of materials, liquid, and molecular systems that could be explored because of the limited penetrating power. Our recent work showed that longer-wavelength midinfrared driving lasers at wavelengths from 1… 

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References

SHOWING 1-10 OF 62 REFERENCES

Controlling attosecond electron dynamics by phase-stabilized polarization gating

Attosecond electron wavepackets are produced when an intense laser field ionizes an atom or a molecule1. When the laser field drives the wavepackets back to the parent ion, they interfere with the

Generation of isolated attosecond pulses with 20 to 28 femtosecond lasers.

This work proposes and demonstrates a technique called generalized double optical gating for generating isolated attosecond pulses with 20 fs lasers from a hollow-core fiber and 28 fs lasers directly from an amplifier, which makes attophysics more accessible to many laboratories that are capable of producing such multicycle laser pulses.

Characterizing isolated attosecond pulses from hollow-core waveguides using multi-cycle driving pulses

The generation of attosecond-duration light pulses using the high-order harmonic generation process is a rapidly evolving area of research. In this work, we combine experimental measurements with

Phase matching of high harmonic generation in the soft and hard X-ray regions of the spectrum

The rapidly decreasing microscopic single-atom yield, predicted for harmonics driven by longer-wavelength lasers, is compensated macroscopically by an increased optimal pressure for phase matching and a rapidly decreasing reabsorption of the generated X-rays, making tabletop, fully coherent, multi-keV X-ray sources feasible.

Isolated attosecond pulses from ionization gating of high-harmonic emission

The attosecond nonlinear optics of bright coherent X-ray generation

The frequency doubling of laser light was one of the first new phenomena observed following the invention of the laser over 50 years ago. Since then, the quest to extend nonlinear optical

Soft X-ray-Driven Femtosecond Molecular Dynamics

This work found that substantial fragmentation occurs through an electron-shakeup process, in which a second electron is simultaneously excited during the soft x-ray photoionization process, creating highly excited molecular cations.

Bright Coherent Ultrahigh Harmonics in the keV X-ray Regime from Mid-Infrared Femtosecond Lasers

By guiding a mid-infrared femtosecond laser in a high-pressure gas, ultrahigh harmonics can be generated that emerge as a bright supercontinuum that spans the entire electromagnetic spectrum from the ultraviolet to more than 1.6 kilo–electron volts, allowing, in principle, the generation of pulses as short as 2.5 attoseconds.

Infrared two-color multicycle laser field synthesis for generating an intense attosecond pulse.

The proposed method enables the requirements for the pump pulse duration to be relaxed but also to reduce ionization of the harmonic medium, which opens the door to create an intense isolated attosecond pulse using a conventional femtosecond laser system.

Amplitude and phase control of attosecond light pulses.

The generation, compression, and delivery on target of ultrashort extreme-ultraviolet light pulses using external amplitude and phase control is reported, demonstrating a practical method for synthesizing and controlling attosecond waveforms.
...