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Streak Camera for Strong-Field Ionization.

M Kübel1,2, Z Dube1, A Yu Naumov1

  • 1Joint Attosecond Laboratory, National Research Council and University of Ottawa, Ottawa, Ontario, Canada K1A 0R6.

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|December 9, 2017
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Summary
This summary is machine-generated.

Researchers developed a new method to control electron wave packets in strong-field ionization. This technique separates electron deflection from ionization, enabling precise study of attosecond dynamics.

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Area of Science:

  • Atomic and Molecular Physics
  • Quantum Optics
  • Attosecond Science

Background:

  • Strong laser fields ionize atoms/molecules, creating suboptical cycle wave packets crucial for attosecond science.
  • Conventional experiments convolute ionization and electron deflection, complicating the study of wave packet dynamics.
  • Controlling these wave packets is key to advancing attosecond science and understanding electron behavior.

Purpose of the Study:

  • To demonstrate a novel technique for efficient electron deflection, decoupled from the strong-field ionization process.
  • To enable the distinction of electron wave packets generated at different field maxima of intense laser pulses.
  • To provide a general method for studying and controlling strong-field ionization dynamics on the attosecond timescale.

Main Methods:

  • Utilized a mid-infrared (mid-IR) laser field for electron deflection, separate from the visible laser pulse driving ionization.
  • Employed intense few-cycle visible laser pulses to generate initial electron wave packets.
  • Analyzed the scattering of low-energy electrons driven by the mid-IR field to probe ionization dynamics.

Main Results:

  • Successfully demonstrated efficient electron deflection, distinct from the ionization field.
  • Enabled the differentiation of electron wave packets created at various maxima of the visible laser pulse.
  • Traced the scattering dynamics of low-energy electrons under mid-IR field influence.

Conclusions:

  • The developed technique offers a powerful new approach to control and study strong-field ionization.
  • This method allows for the disentanglement of ionization and electron dynamics, crucial for attosecond science.
  • Represents a generalizable technique for advancing research in ultrafast electron dynamics and quantum control.