Millijoule-level parametric synthesizer generating two-octave-wide optical waveforms for strong-field experiments

We demonstrate a phase-stable, 3-channel parametric synthesizer generating a 2-octave-wide spectrum (0.52–2.4μm). After two amplification stages, the combined 125-μJ output supports 1.9-fs waveforms. The third stage of the IR degenerate OPA yields 1.7-mJ octave-spanning spectra.