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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 11,
  • Issue 6,
  • pp. 063202-
  • (2013)

Effect of gas species on THz generation from two-color lasers

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Abstract

The ionization current generated by two-color laser interaction with different gas atoms can produce strong terahertz (THz) emissions. The ionization potential of atoms determines the ionization rate. Thus, THz emission from different atoms varies. Particle-in-cell simulations are conducted to investigate the THz emission from He, Ne, Ar, and N. The THz emissions as a function of the laser field are different because the ionization rate and electron speed depend on the laser field and ionization potential.

© 2013 Chinese Optics Letters

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