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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 65, Iss. 8 — Aug. 1, 1975
  • pp: 882–886

Theory of relativistic self-focusing of laser radiation in plasmas

Heinrich Hora  »View Author Affiliations


JOSA, Vol. 65, Issue 8, pp. 882-886 (1975)
http://dx.doi.org/10.1364/JOSA.65.000882


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Abstract

Propagation into a homogeneous plasma of a laser beam at irradiances higher than 1/500 of the relativistic threshold can result in self-focusing due to the highly sensitive relativistic dependence of the optical constants on laser irradiance. Electron densities slightly less than the relativistic-cutoff densities are required. Simultaneously with the self-focusing, it is also possible to achieve a dielectric increase (swelling) of laser energy density in the plasma that could reach 1/3 of its maximum value. In prepulsed plasmas, generated by Nd-glass-laser pulses of 3 × 1016 W/cm2, relativistic diffraction-limited self-focusing can generate relativistic electron-oscillation energies and hence pair production.

Citation
Heinrich Hora, "Theory of relativistic self-focusing of laser radiation in plasmas," J. Opt. Soc. Am. 65, 882-886 (1975)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-65-8-882

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