Propagation of radius-tailored laser pulses over extended distances in a uniform plasma*
- 1 May 1994
- journal article
- Published by AIP Publishing in Physics of Plasmas
- Vol. 1 (5) , 1738-1743
- https://doi.org/10.1063/1.870678
Abstract
A Maxwell-fluid model is described, which allows simulation of laser pulses over extended distances (multiple diffraction lengths) in an underdense plasma. This model is used to simulate radius-tailored laser pulses, which can propagate over such distances with minimal distortion in a uniform plasma. Theoretical model equations governing the choice of radius tailoring are also given. A radius-tailored pulse has constant power approximately equal to the critical power for relativistic guiding over the length of the pulse and a spot size at focus that varies over the length of the pulse. A laser pulse configuration of this type can be constructed from a series of ultrashort Gaussian pulses.Keywords
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