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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 P. 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 P. 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/