High-fidelity few-cycle pulse generation via nonlinear ellipse rotation in a multipass cell at the mJ-level

Abstract

We report on the generation of high-fidelity few-cycle pulses via nonlinear ellipse rotation in an Argon-filled multipass cell at the mJ-level. We obtain a good spatio-temporal beam quality, with at least 3-orders of magnitude of contrast improvement, and high internal efficiency of 69%.