THEORY OF STOKES PULSE SHAPES IN TRANSIENT STIMULATED RAMAN SCATTERING.

Abstract

The theory of transient stimulated Raman scattering has been extended to include an arbitrary shape of the laser pump pulse. It is shown that the maximum Stokes gain depends on the total energy content per unit area of the pump pulse, and not on the instantaneous intensity for an exciting pulse of short duration. The Stokes pulse has a leading edge which rises sharply to a maximum, where the maximum occurs with some delay with respect to the maximum of the pump pulse. The trailing edge follows the decay of the pump. In a nondispersive medium, the gain is not reduced by frequency broadening of the laser output, while in a dispersive medium, considerable gain reduction is expected. Numerical results for various laser pulse shapes and spectral distributions are presented. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1970
Accession Number
AD0704182

Entities

People

  • C. S. Wang
  • F. Shimizu
  • Nicolaas Bloembergen
  • R. L. Carman

Organizations

  • Harvard University

Tags

DTIC Thesaurus Topics

  • Contracts
  • Edges
  • Electromagnetic Radiation
  • Electromagnetic Scattering
  • Frequency
  • Intensity
  • Laser Pulses
  • Leading Edges
  • Raman Scattering
  • Scattering
  • Trailing Edges

Fields of Study

  • Engineering
  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers