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Direct Observation of Density-Gradient Effects in Harmonic Generation from Plasma Mirrors

Abstract : High-order harmonics and attosecond pulses of light can be generated when ultraintense, ultrashort laser pulses reflect off a solid-density plasma with a sharp vacuum interface, i.e., a plasma mirror. We demonstrate experimentally the key influence of the steepness of the plasma-vacuum interface on the interaction, by measuring the spectral and spatial properties of harmonics generated on a plasma mirror whose initial density gradient scale length L is continuously varied. Time-resolved interferometry is used to separately measure this scale length.
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https://hal-cea.archives-ouvertes.fr/cea-00853613
Contributor : Bruno Savelli <>
Submitted on : Friday, August 23, 2013 - 9:44:00 AM
Last modification on : Wednesday, October 23, 2019 - 4:18:19 PM

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S. Kahaly, S. Monchocé, H. Vincenti, T. Dzelzainis, B. Dromey, et al.. Direct Observation of Density-Gradient Effects in Harmonic Generation from Plasma Mirrors. Physical Review Letters, American Physical Society, 2013, 110, pp.175001. ⟨10.1103/PhysRevLett.110.175001⟩. ⟨cea-00853613⟩

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