Collisionless absorption of femtosecond laser pulses in plasmas by nonlinear forces
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TLDR
In this paper, a mathematically more rigorous treatment of this problem is presented where a nonlinear differential equation is derived for the general solution in the approximation of Klima and Petrzilka.Abstract:
A mechanism has been discussed before by Dragila and Hora where very short laser pulses in a homogeneous plasma can be absorbed without collisions by the action of time dependent nonlinear forces. The resulting absorption lengths are of interest for the study of femtosecond neodymium glass laser pulses or the sub-picosecond carbon dioxide laser pulses which are now available. A mathematically more rigorous treatment of this problem is presented where a nonlinear differential equation is derived for the general solution in the approximation of Klima and Petrzilka. The ordinary differential equation can be solved exactly. With reasonable initial conditions, the solutions are similar to those of Dragila and Hora and are evaluated numerically for cases of experimental interest.read more
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References
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Nonlinear Confining and Deconfining Forces Associated with the Interaction of Laser Radiation with Plasma
TL;DR: In this paper, the theory of nonlinear collisionless acceleration is used to explain the experimentally observed properties of the fast part of plasmas produced by lasers from isolated single small aluminum balls and thick solid targets.
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Generation and measurement of optical pulses as short as 16 fs
TL;DR: In this article, the authors describe measurements of pulses consisting of only eight optical periods, which were produced by compression with a short optical fiber and a grating pair, by autocorrelation using noncollinear second harmonic generation in a thin crystal of potassium dihydrogen phosphate.
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First direct electron and ion fluid computation of high electrostatic fields in dense inhomogeneous plasmas with subsequent nonlinear laser interaction
Paraskevas Lalousis,H. Hora +1 more
TL;DR: In this paper, a hydrodynamic study of the electrostatic phenomena in plasmas has been performed, where the numerically observed oscillations of the fields and electron fluid and the waves and their damping by collisions have been evaluated and an analytical model has been derived to study damping of Coulomb collisions.