Abstract
When a terawatt-peak-power laser is focused to high intensity into a plasma, elcctrons quiver at velocities close to the speed of light (c) in the laser's transverse oscillating electromagnetic field, giving rise to novel effects in a new regime of nonlinear opties. The nonlinearity in this case originates both from changes in the relativistic electron mass and from the increased importance of the v×B force in the Lorentz equation of motion F = d(γp)/dt = eE + (e/c)(v×B).
© 2001 Optical Society of America
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