title: Energy-scalable temporal cleaning device for femtosecond laser pulses based on cross-polarized wave generation.
abstract: We report on a compact energy-scalable device for generating high-fidelity femtosecond laser pulses based on spatial filtering through a hollow-core fiber followed by a nonlinear crystal for cross-polarized wave (XPW) generation. This versatile device is suited for temporal pulse cleaning over a wide range of input energies (from 0.1 to >10 mJ) and is successfully qualified on different ultrafast laser systems. Full characterization of the XPW output is presented. In particular, we demonstrate the generation of 1.6 mJ energy pulses starting from 11 mJ input pulse energy. The temporal contrast of the pulses is enhanced by more than 4 orders of magnitude. In addition, pulse shortening from 40 fs down to 15 fs Fourier-transform limit yields an overall peak-power transmission of up to 50%. This device not only serves as an integrated pulse contrast filter inside an ultrafast laser amplifier but also as a simple back-end solution for temporal post-compression of amplified pulses.
authors: Laboratoire d'Optique Appliquée, ENSTA-Paristech, Ecole Polytechnique, CNRS, 91761 Palaiseau, France. aurelien.ricci@ensta-paristech.fr
authors: Aurélien
authors: A
authors: Ricci
authors: Aurélie
authors: A
authors: Jullien
authors: Jean-Philippe
authors: JP
authors: Rousseau
authors: Yi
authors: Y
authors: Liu
authors: Aurélien
authors: A
authors: Houard
authors: Patricia
authors: P
authors: Ramirez
authors: Dimitris
authors: D
authors: Papadopoulos
authors: Alain
authors: A
authors: Pellegrina
authors: Patrick
authors: P
authors: Georges
authors: Frédéric
authors: F
authors: Druon
authors: Nicolas
authors: N
authors: Forget
authors: Rodrigo
authors: R
authors: Lopez-Martens