Nonlinear propagation of a randomized laser beam: plasma-induced smoothing and scattering instabilities

Andrei V. Maximov; Wojciech Rozmus; Clarence E. Capjack; M. Foote

doi:10.1117/12.425622

23 April 2001 Nonlinear propagation of a randomized laser beam: plasma-induced smoothing and scattering instabilities

Andrei V. Maximov, Wojciech Rozmus, Clarence E. Capjack, M. Foote

Proceedings Volume 4424, ECLIM 2000: 26th European Conference on Laser Interaction with Matter; (2001) https://doi.org/10.1117/12.425622
Event: 26th European Conference on Laser Interaction with Matter (ECLIM 2000), 2000, Prague, Czech Republic

Abstract

The instability of hot spots leading to angular spreading and frequency broadening of a spatially randomized laser beam has a much lower threshold for collisional plasmas compared to the collisionless regime. The plasma-induced spatial and temporal incoherence in forward-propagating light is consistent with the forward stimulated Brillouin scattering (SBS). It also serves to reduce the reflectivity of backward SBS. The interaction of randomized beams with collisional plasmas produces the angular and frequency spectra of transmitted light that are much broader and smoother than in the collisionless regime.

Citation Download Citation

Andrei V. Maximov, Wojciech Rozmus, Clarence E. Capjack, and M. Foote "Nonlinear propagation of a randomized laser beam: plasma-induced smoothing and scattering instabilities", Proc. SPIE 4424, ECLIM 2000: 26th European Conference on Laser Interaction with Matter, (23 April 2001); https://doi.org/10.1117/12.425622

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