Accession Number : AD0704182

Title :   THEORY OF STOKES PULSE SHAPES IN TRANSIENT STIMULATED RAMAN SCATTERING.

Descriptive Note : Technical rept.,

Corporate Author : HARVARD UNIV CAMBRIDGE MASS DIV OF ENGINEERING AND APPLIED PHYSICS

Personal Author(s) : Carman,R. L. ; Shimizu,F. ; Wang,C. S. ; Bloembergen,N.

Report Date : JAN 1970

Pagination or Media Count : 43

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)

Descriptors :   (*RAMAN SPECTROSCOPY, LIGHT PULSES), TRANSIENTS, SCATTERING, LASERS

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE