Published October 1996
| Version v1
Journal article
Effect of diffraction on stimulated Brillouin scattering from a single laser hot spot
- 1. Theoretical Physics Institute, Department of Physics, University of Alberta, Edmonton, Alberta, T6G 2J1 (CANADA)
- 2. Department of Electrical Engineering, University of Alberta, Edmonton, Alberta, T6G 2G7 (CANADA)
Description
A single laser hot spot in an underdense plasma is represented as a focused Gaussian laser beam. Stimulated Brillouin scattering (SBS) from such a Gaussian beam with small f/numbers 2-4 has been studied in a three-dimensional slab geometry. It is shown that the SBS reflectivity from a single laser hot spot is much lower than that predicted by a simple three wave coupling model because of the diffraction of the scattered light from the spatially localized ion acoustic wave. SBS gain per one Rayleigh length of the incident laser beam is proposed as a quantitative measure of this effect. Diffraction-limited SBS from a randomized laser beam is also discussed. copyright 1996 American Institute of Physics
Additional details
Publishing Information
- Journal Title
- Physics of Plasmas
- Journal Volume
- 3
- Journal Issue
- 10
- Journal Page Range
- p. 3754-3760.
- ISSN
- 1070-664X
- CODEN
- PHPAEN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 28011296
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- BEAM-PLASMA SYSTEMS; BRILLOUIN EFFECT; HOT SPOTS; ION ACOUSTIC WAVES; LASER RADIATION; LASER-PRODUCED PLASMA; LIGHT SCATTERING; PARAMETRIC INSTABILITIES
- Descriptors DEC
- COHERENT SCATTERING; ELECTROMAGNETIC RADIATION; INSTABILITY; ION WAVES; PLASMA; PLASMA INSTABILITY; PLASMA MACROINSTABILITIES; PLASMA WAVES; RADIATIONS; SCATTERING