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Nonlinear propagation of short intense laser pulses in a hollow metallic waveguide
N E Andreev1, C Courtois, B Cros
1Institute for High Energy Densities, Associated Institute for High Temperatures of RAS, Izhorskaya 13/19, Moscow 127412, Russia.
Abstract:
The propagation of a short intense laser pulse in the femtosecond range in a hollow metallic waveguide gives rise to heating of the metallic wall. The temperature of the degenerate electron gas in the wall is increased during the pulse duration and this heating affects the propagation and dissipation of the laser pulse. Analytical and numerical analysis shows that, as the dissipation is increased, the leading edge of the pulse decreases more slowly than the rear, resulting in a pulse shortening.