Journal
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Volume 43, Issue 21, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-4075/43/21/213001
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Funding
- European Research Council under the European Community [FP7/2007-2013, 240013]
- LASERLAB Europe II [FP7/2007-2013, 228334]
- GENCI (Grand Equipement National de Calcul Intensif) [2009-056057]
- French Agence Nationale pour la Recherche (ANR) [BLAN06-3-134072]
- AXA Research Fund
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When an intense femtosecond laser pulse hits an optically polished surface, it generates a dense plasma that itself acts as a mirror, known as the plasma mirror. As this mirror reflects the high-intensity laser field, its nonlinear temporal response can lead to a periodic temporal distortion of the reflected wave, associated with a train of attosecond light pulses, and, in the frequency domain, to the generation of high-order harmonics of the laser. This tutorial presents detailed theoretical and numerical analysis of the two dominant harmonic generation mechanisms identified so far, coherent wake emission and the relativistic oscillating mirror. Parametric studies of the emission efficiency are presented for these two regimes, and the phase properties of the corresponding harmonics are discussed. This theoretical study is complemented by a synthesis of recent experimental results, which establishes that these two mechanisms indeed dominate harmonic generation on plasma mirrors.
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