Harmonic Generation by an Intense Picosecond Laser in an Underdense Plasma,

Abstract

We report both theoretical calculations and experimental observations of second harmonic (SHG) and third harmonic generation (THG) in long scale-length underdense plasmas. Second harmonic generation, normally forbidden in a uniform plasma, is allowed by a radial electron density profile that results from the laser-intensity dependent ionization. Experimental measurements of the scaling of the harmonics with density and laser intensity are presented.

Document Details

Document Type
Technical Report
Publication Date
May 22, 1992
Accession Number
ADP007040

Entities

People

  • C. Y. Chien
  • D. Umstadter
  • J. S. Coe
  • X. Liu

Organizations

  • University of Michigan

Tags

DTIC Thesaurus Topics

  • California
  • Charged Particles
  • Coherent Radiation
  • Corpuscular Radiation
  • Demographic Cohorts
  • Electron Density
  • Electrons
  • Elementary Fermions
  • Elementary Particles
  • Fermions
  • Harmonics
  • Intensity
  • Ionization
  • Ionizing Radiation
  • Radiation
  • Second Harmonic Generation
  • Third Harmonic Generation

Fields of Study

  • Physics

Readers

  • Astronomy and Astrophysics.
  • Optical Physics and Photonics.
  • Plasma Physics / Magnetohydrodynamics

Technology Areas

  • Directed Energy
  • Microelectronics