Nonlinear pulse compression of a thin-disk amplifier and contrast enhancement via nonlinear ellipse rotation
Y. Pfaff, Carola Forster, Gaia Barbiero, Michael Rampp, Sandro Klingebiel, Jonathan Brons, Catherine Y. Teisset, Haochuan Wang, Robert Jung, Jasna Jaksic, A. H. Woldegeorgis, Clara J. Saraceno, Thomas Metzger
Abstract
We demonstrate pulse compressibility from 840 fs to 38 fs of 10 mJ pulses from a thin-disk amplifier at a repetition rate of 3 kHz after nonlinear broadening in a multipass cell. In addition, the temporal-intensity contrast is enhanced via nonlinear ellipse rotation of more than a factor 50 with an optical efficiency of 56%. We believe this is the first published experimental combination of multipass cell-based nonlinear compression and nonlinear ellipse rotation-based contrast enhancement preserving both pulse compressibility and beam quality.