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Simon Brennecke1, Martin Ranke2,3, Anastasios Dimitriou2,3,4

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Summary
This summary is machine-generated.

We demonstrate precise control over electrons using phase-stable terahertz (THz) pulses. This enables observing electron-ion scattering and other dynamics, confirmed by simulations.

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Area of Science:

  • Quantum Optics
  • Attosecond Science
  • Electron Dynamics

Background:

  • Terahertz (THz) pulses offer unique capabilities for controlling electron dynamics.
  • Phase stability in THz pulses is crucial for precise manipulation of quantum systems.

Purpose of the Study:

  • To demonstrate the control of low-energy electrons using carrier-envelope-phase-stable near-single-cycle THz pulses.
  • To investigate electron dynamics under THz field interaction.

Main Methods:

  • Utilizing a femtosecond laser to generate a localized wave packet via multiphoton absorption synchronized with a THz field.
  • Measuring photoelectron momentum distributions as a function of time delay.
  • Performing three-dimensional time-dependent Schrödinger equation simulations.

Main Results:

  • Observed various electron dynamics regimes, including recollision-free acceleration and coherent electron-ion scattering.
  • Experimental findings were validated by theoretical simulations.
  • Identified scattering phenomena analogous to strong-field photoelectron holography and high-order above-threshold ionization.

Conclusions:

  • Carrier-envelope-phase-stable THz pulses provide precise control over electron wave packets.
  • The study reveals complex electron-ion scattering dynamics driven by THz fields.
  • This work paves the way for advanced control in electron optics and spectroscopy.