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Journal Articles Physical Review Letters Year : 2005

Observation of Laser-Pulse Shortening in Nonlinear Plasma Waves

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Abstract

We have measured the temporal shortening of an ultraintense laser pulse interacting with an underdense plasma. When interacting with strongly nonlinear plasma waves, the laser pulse is shortened from 38±2  fs to the 10–14 fs level, with a 20% energy efficiency. The laser ponderomotive force excites a wakefield, which, along with relativistic self-phase modulation, broadens the laser spectrum and subsequently compresses the pulse. This mechanism is confirmed by 3D particle in cell simulations.
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Dates and versions

hal-00507934 , version 1 (02-08-2010)

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Jérôme Faure, Yannick Glinec, J.J. Santos, F. Ewald, Jean-Philippe Rousseau, et al.. Observation of Laser-Pulse Shortening in Nonlinear Plasma Waves. Physical Review Letters, 2005, 95 (20), pp.205003. ⟨10.1103/PhysRevLett.95.205003⟩. ⟨hal-00507934⟩
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