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Harmonic Generation by an Intense Laser Pulse in Neutral and Ionized Gases
Donald Umstadter Publications
  • X. Liu, University of Michigan, Ann Arbor
  • Donald Umstadter, University of Nebraska-Lincoln
  • Eric Esarey, Beam Physics Branch, Naval Research Laboratory,Washington, DC
  • A. Ting, Beam Physics Branch, Naval Research Laboratory,Washington, DC
Date of this Version
2-1-1993
Disciplines
Comments

IEEE Transactions on Plasma Science 21, 90 (1993). Copyright 1993. Permission to use.

Abstract
Reported are the results of a harmonic generation experiment in a simple gas (hydrogen) using 1-ps, 1-pm laser pulses with a range of intensities extending from below to far above the laser ionization saturation threshold. The scaling with intensity above saturation of the third harmonic generated by a single laser-pulse in a filled gas cell is observed to not fit with a simple model that takes into consideration volume ionization effects alone. In another experiment, a pump-probe type, an upper limit on the conversion efficiency of third harmonic generation in a preformed plasma is determined. It is found to be in agreement with the efficiency predicted by a relativistic harmonic generation theory.
Citation Information
X. Liu, Donald Umstadter, Eric Esarey and A. Ting. "Harmonic Generation by an Intense Laser Pulse in Neutral and Ionized Gases" (1993)
Available at: http://works.bepress.com/donald_umstadter/63/