Stefan Haessler, Marie Ouillé, Jaismeen Kaur, Maïmouna Bocoum, Frederik Böhle, Dan Levy, Louis Daniault, Aline Vernier, Jérôme Faure, Rodrigo Lopez-Martens. 2022: High-Harmonic Generation and Correlated Electron Emission from Relativistic Plasma Mirrors at 1 kHz Repetition Rate. Ultrafast Science, 2022(3). doi: 10.34133/2022/9893418
Citation:
Stefan Haessler, Marie Ouillé, Jaismeen Kaur, Maïmouna Bocoum, Frederik Böhle, Dan Levy, Louis Daniault, Aline Vernier, Jérôme Faure, Rodrigo Lopez-Martens. 2022: High-Harmonic Generation and Correlated Electron Emission from Relativistic Plasma Mirrors at 1 kHz Repetition Rate. Ultrafast Science, 2022(3). doi: 10.34133/2022/9893418
Stefan Haessler, Marie Ouillé, Jaismeen Kaur, Maïmouna Bocoum, Frederik Böhle, Dan Levy, Louis Daniault, Aline Vernier, Jérôme Faure, Rodrigo Lopez-Martens. 2022: High-Harmonic Generation and Correlated Electron Emission from Relativistic Plasma Mirrors at 1 kHz Repetition Rate. Ultrafast Science, 2022(3). doi: 10.34133/2022/9893418
Citation:
Stefan Haessler, Marie Ouillé, Jaismeen Kaur, Maïmouna Bocoum, Frederik Böhle, Dan Levy, Louis Daniault, Aline Vernier, Jérôme Faure, Rodrigo Lopez-Martens. 2022: High-Harmonic Generation and Correlated Electron Emission from Relativistic Plasma Mirrors at 1 kHz Repetition Rate. Ultrafast Science, 2022(3). doi: 10.34133/2022/9893418
a Laboratoire d’Optique Appliquée, ENSTA Paris, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 181 Chemin de la Hunière et des Joncherettes, 91120 Palaiseau, France
b Ardop Engineering, Cité de la Photonique, 11 Avenue de la Canteranne, Bât. Pléione, 33600 Pessac, France
c Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 7610001, Israel
Funds:
This work was supported by the Agence Nationale pour la Recherche (ANR-11-EQPX-005-ATTOLAB and ANR-14-CE32-0011-03 APERO), Investissements d’Avenir Program LabEx PALM (ANR-10-LABX-0039-PALM), European Research Council (ERC FEMTOELEC 306708 and ERC ExCoMet 694596), Laserlab-Europe (H2020-EU.1.4.1.2. grant agreement ID 654148), and Région Ile-de-France (SESAME 2012-ATTOLITE).
We report evidence for the first generation of XUV spectra from relativistic surface high-harmonic generation (SHHG) on plasma mirrors at a kilohertz repetition rate, emitted simultaneously with energetic electrons. SHHG spectra and electron angular distributions are measured as a function of the experimentally controlled plasma density gradient scale length Lg for three increasingly short and intense driving pulses: 24 fs and a0 = 1:1, 8 fs and a0 = 1:6, and finally 4 fs and a0 ≈ 2:1, where a0 is the peak vector potential normalized by mec/e with the elementary charge e, the electron rest mass me, and the vacuum light velocity c. For all driver pulses, we observe correlated relativistic SHHG and electron emission in the range Lg ∈ ½λ/20, λ/4, with an optimum gradient scale length of Lg ≈ λ/10. This universal optimal Lg-range is rationalized by deriving a direct intensity-independent link between the scale length Lg and an effective similarity parameter for relativistic laser-plasma interactions.