Self-focusing of laser beams in a plasma by ponderomotive forces |
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Authors: | Heinrich Hora |
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Affiliation: | 1. Institut für Plasmaphysik, Garching b. München, Germany 2. Rensselaer Polytechnic Institute, Graduate Center, Hartford, Connecticut, USA
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Abstract: | Self-focusing of a laser beam in a plasma is treated in terms of the ponderomotive acceleration due to the gradient of the light intensity. The focusing of radiation within the first minima of diffraction sets a lower limit to the laser power which is of the order of 1 MW for the usual lasers if cut-off density and a plasma temperature of about 10 eV are assumed. |
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