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Journal Articles Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Year : 2013

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

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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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cea-00853620 , version 1 (23-08-2013)

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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, 2013, 87, pp.035101. ⟨10.1103/PhysRevE.87.035101⟩. ⟨cea-00853620⟩
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