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Coherent wake emission spectroscopy as a probe of steep plasma density profiles

Abstract : Precise knowledge of the plasma density gradient created by an intense laser field at the surface of a solid is essential for understanding and controlling the resulting laser-plasma interaction. We present a novel experimental method for determining the scale length of such a gradient in a single shot, based on the spectral analysis of coherent wake emission by a laser-induced solid density plasma, using an analytical model of this emission process. We illustrate this approach in a pump-probe experiment, where it is used to measure the expansion velocity of a plasma into a vacuum.
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https://hal-cea.archives-ouvertes.fr/cea-00853620
Contributor : Bruno Savelli <>
Submitted on : Friday, August 23, 2013 - 9:55:00 AM
Last modification on : Tuesday, April 21, 2020 - 10:29:58 AM

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A. Malvache, A. Borot, F. Quéré, Rodrigo B. Lopez-Martens. Coherent wake emission spectroscopy as a probe of steep plasma density profiles. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2013, 87, pp.035101. ⟨10.1103/PhysRevE.87.035101⟩. ⟨cea-00853620⟩

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