Self-guiding of 100 TW Femtosecond Laser Pulses in Centimeter-scale Underdense Plasma

Details Self-guiding of 100 TW Femtosecond Laser Pulses in Centimeter-scale Underdense Plasma Self-guiding of 100 TW Femtosecond Laser Pulses in Centimeter-scale Underdense Plasma

2006-05-29

arxiv.org/abs/physics/0605240v1

Physics

Plasma Physics

Scientific paper

10.1063/1.2720374

An experiment for studying laser self-guiding has been carried out for the high power ultrashort pulse laser interaction with an underdense plasma slab. Formation of an extremely long plasma channel and its bending are observed when the laser pulse power is much higher than the critical power for relativistic self-focusing. The long self-guiding channel formation is accompanied by electron acceleration with a low transverse emittance and high electric current. Particle-in-cell simulations show that laser bending occurs when the accelerated electrons overtake the laser pulse and modify the refractive index in the region in front of the laser pulse.

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