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Interferometric control of the ellipticity of a femtosecond extreme ultraviolet source

V. Gruson 1, 2 Sébastien J. Weber 3 L. Barreau 4 J.-F. Hergott 5 F. Lepetit 5 T. Auguste 4 B. Carre 1, 4 P. Salières 4, 1 T. Ruchon 1, 4
3 CEMES-NeO - Nano-Optique et Nanomatériaux pour l'optique
CEMES - Centre d'élaboration de matériaux et d'études structurales
4 ATTO - Attophysique
IRAMIS - Institut Rayonnement Matière de Saclay, LIDyl - Laboratoire Interactions, Dynamiques et Lasers (ex SPAM)
5 SLIC - Serveurs Laser
IRAMIS - Institut Rayonnement Matière de Saclay, LIDyl - Laboratoire Interactions, Dynamiques et Lasers (ex SPAM)
Abstract : A method for ultrafast ellipticity modulation of femtosecond intense lasers is introduced and demonstrated. The method is based on the coherent superimposition of two linearly polarized visible/infrared (Vis-IR) laser beams with orthogonal polarizations. Tuning their delay by a quarter of the wavelength, i.e., a few hundred nanometers, achieves the same function as the rotation of a quarter-wave plate by 45°, switching the polarization from linear to circular. We demonstrate the portability of this method to high-intensity processes by upconverting a femtosecond Vis-IR laser beam to the extreme ultraviolet (EUV) spectral range through high-harmonic generation. These results open the way to lock-in detection of small absorption chiroptical signals in the EUV spectral range, including pump probe signals.
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https://hal.archives-ouvertes.fr/hal-01730424
Contributor : Sébastien Weber <>
Submitted on : Tuesday, March 13, 2018 - 12:04:00 PM
Last modification on : Monday, February 10, 2020 - 6:14:04 PM

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V. Gruson, Sébastien J. Weber, L. Barreau, J.-F. Hergott, F. Lepetit, et al.. Interferometric control of the ellipticity of a femtosecond extreme ultraviolet source. Journal of the Optical Society of America B, Optical Society of America, 2018, 35 (4), ⟨10.1364/JOSAB.35.000A15⟩. ⟨hal-01730424⟩

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