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Related Experiment Videos

High-gain harmonic-generation free-electron laser

Yu1, Babzien, Ben-Zvi

  • 1Brookhaven National Laboratory, Upton, NY 11973, USA. Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA.

Science (New York, N.Y.)
|August 11, 2000
PubMed
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This summary is machine-generated.

A novel laser-seeded free-electron laser technique successfully generated high-gain harmonic output. This method produced amplified, coherent laser light at a harmonic wavelength, paving the way for advanced light sources.

Area of Science:

  • Physics
  • Optics
  • Laser Technology

Background:

  • Free-electron lasers (FELs) are powerful light sources.
  • Generating coherent light at specific harmonic frequencies is challenging.

Purpose of the Study:

  • To demonstrate a high-gain harmonic-generation technique for free-electron lasers.
  • To produce amplified, longitudinally coherent, Fourier transform-limited output at a harmonic of the seed laser.

Main Methods:

  • Utilized a laser-seeded free-electron laser setup.
  • Employed a carbon dioxide laser (10.6 micrometers) as the seed source.
  • Achieved saturated, amplified FEL output at the second harmonic (5.3 micrometers).

Main Results:

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  • Successfully demonstrated high-gain harmonic generation in a free-electron laser.
  • Produced amplified, coherent output at the second harmonic of the seed laser.
  • Verified the theoretical basis for the harmonic generation technique.

    • Conclusions:

    • The demonstrated technique is effective for generating harmonic frequencies from FELs.
    • This method advances the development of tunable, high-power coherent light sources.
    • The approach has potential applications in the vacuum ultraviolet and for generating hard X-rays.