Phys. Rev. Lett. 76, 3332–3335 (1996)Anomalous Absorption and Scattering of Short-Pulse High-Intensity Lasers in Underdense PlasmasReceived 11 September 1995; published in the issue dated 29 April 1996 The propagation of short-pulse lasers through several Rayleigh lengths of underdense plasma [(1–4)%ncr] is studied using multidimensional fully explicit particle-in-cell simulations. The simulations model 80 to 600 fs, 1 μm wavelength pulses in the intensity range of 1.5×1017 to 3.5×1019 W/cm2. A detailed account is given for the energy lost out of the focal cone due to a combination of collective absorption and scattering losses. The figure of merit for the nonlinear transmission losses of a given pulse length is the amount of Raman forward scattering exponentiation within a Rayleigh length. © 1996 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.76.3332
DOI:
10.1103/PhysRevLett.76.3332
PACS:
52.40.Nk, 42.25.Bs, 52.65.Rr
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