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Femtosecond light source for phase-controlled multiphoton ionization.

A V Sokolov1, D R Walker, D D Yavuz

  • 1Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA.

Physical Review Letters
|July 20, 2001
PubMed
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We developed a broadband femtosecond Raman light source for precise control over multiphoton ionization. This breakthrough enables detailed characterization of light-matter interactions and the generation of ultrashort waveforms.

Area of Science:

  • Ultrafast laser science
  • Nonlinear optics
  • Atomic and molecular physics

Background:

  • Generating broadband ultrashort pulses is crucial for studying ultrafast phenomena.
  • Controlling multiphoton ionization requires precise laser pulse shaping.

Purpose of the Study:

  • To develop and characterize a femtosecond Raman light source with over an octave of optical bandwidth.
  • To demonstrate phase control of multiphoton ionization using this novel light source.

Main Methods:

  • Generation of a broadband femtosecond Raman light source.
  • Experimental demonstration of phase control in multiphoton ionization.
  • Characterization of the light source via nonlinear photoionization processes.

Main Results:

Related Experiment Videos

  • Achieved a femtosecond Raman light source with more than an octave of optical bandwidth.
  • Demonstrated phase control of multiphoton ionization requiring 5-11 photons.
  • Experiment-to-theory comparison indicates the generation of a near single-cycle waveform.

Conclusions:

  • The developed light source offers precise control over multiphoton ionization.
  • The nonlinear photoionization process serves as an effective tool for light source characterization.
  • The results suggest the successful generation of a near single-cycle waveform, advancing ultrafast optics.