title: Characterization of a nonlinear filter for the front-end of a high contrast double-CPA Ti:sapphire laser.
abstract: A nonlinear filter using rotation of the polarization ellipse in air is investigated. Scheme to enhance the temporal contrast is developed for a double-CPA multi-terawatt Ti:sapphire laser. It supports an energy level of millijoule and has a high efficiency. The method allows suppression of the ASE pedestal, pre- and post-pulses by 3 orders of magnitude and also steepens the pulse front. For the physical interpretation of the results, numerical simulation of the filtering is performed.
authors.forename: M
authors.initials: M
authors.lastname: Kalashnikov
authors.forename: E
authors.initials: E
authors.lastname: Risse
authors.forename: H
authors.initials: H
authors.lastname: Schönnagel
authors.forename: A
authors.initials: A
authors.lastname: Husakou
authors.forename: J
authors.initials: J
authors.lastname: Herrmann
authors.forename: W
authors.initials: W
authors.lastname: Sandner