2003/12/09 by Pavel M. Lushnikov, Harvey A. Rose · 2 citations
Physics and Astronomy · #Advanced Fiber Laser Technologies #Beam (structure) #Boundary (topology) #Brillouin scattering #Brillouin zone #Computational physics #Diffusion #Inertial confinement fusion #Instability #Laser #Laser-Matter Interactions and Applications #Laser-Plasma Interactions and Diagnostics #Mathematical analysis #Mechanics #Non-equilibrium thermodynamics #Optics #Physics #Plasma #Quantum mechanics #nlin.CD #nlin.PS #physics.optics #physics.plasm-ph
paper · pdf · doi:10.1103/physrevlett.92.255003
published as Physical Review Letters, v.92, p. 255003 (2004). · 4 pages,6 figures, submitted to Phys. Rev. Lett
arxiv created 2003/12/09 · openalex publication_date 2004/06/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We obtain, for the first time, an analytic theory of the forward stimulated Brillouin scattering instability of a spatially and temporally incoherent laser beam that controls the transition between statistical equilibrium and nonequilibrium (unstable) self-focusing regimes of beam propagation. The stability boundary may be used as a comprehensive guide for inertial confinement fusion designs. Well into the stable regime, an analytic expression for the angular diffusion coefficient is obtained, which provides an essential correction to a geometric optic approximation for beam propagation.