Intra-Oscillator High Harmonic Generation in a ∼100-fs Kerr-Lens Mode-Locked Thin-Disk Laser

Abstract

We demonstrate HHG with ∼10¹⁴ W/cm² peak intensity in argon and ∼5×10¹³ W/cm² in krypton inside a mode-locked laser oscillator. The system operates with up to 180-W intracavity average power with 89-fs pulses at 11-MHz.