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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Laser technology: source of coherent kiloelectronvolt X-rays.

J Seres1, E Seres, A J Verhoef

  • 1Institut für Photonik, Technische Universität Wien, 1040 Wien, Austria.

Nature
|February 11, 2005
PubMed
Summary

Scientists have generated laser-like X-rays using a 5-femtosecond laser pulse. This breakthrough paves the way for laboratory sources of kiloelectronvolt X-rays for various scientific applications.

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Area of Science:

  • Atomic and Molecular Physics
  • Laser Physics
  • X-ray Science

Background:

  • Generating laser-like X-rays has been a significant challenge in experimental science.
  • Existing X-ray sources often lack the coherence and collimation required for advanced applications.

Purpose of the Study:

  • To demonstrate the emission of highly collimated and spatially coherent X-rays.
  • To achieve X-ray generation at a wavelength of approximately 1 nanometre and energies up to 1.3 kiloelectronvolts (keV).
  • To establish the feasibility of a laboratory-based source for laser-like X-rays.

Main Methods:

  • Ionizing atoms using an intense 5-femtosecond laser pulse.
  • Characterizing the emitted X-rays for properties such as collimation, coherence, wavelength, and photon energy.

Main Results:

  • Successful emission of highly collimated and spatially coherent X-rays.
  • Achieved X-ray wavelength of ~1 nanometre and photon energies up to 1.3 keV.
  • Demonstrated X-ray generation from laser-ionized atoms.

Conclusions:

  • A laboratory source of laser-like, kiloelectronvolt X-rays is now achievable.
  • The generated X-rays operate on timescales relevant to chemical, biological, and materials science.
  • This advancement opens new possibilities for X-ray research and applications.