Sub-10-fs pulses from a MHz-NOPA with pulse energies of 04 μJ

Abstract

We present a non-collinear optical parametric amplifier (NOPA) delivering sub-10-fs pulses with 420 nJ of pulse energy. The system is driven by microjoule pulses from an Yb:KYW oscillator with cavity-dumping and a subsequent single-stage rod-type fiber amplifier at 1-MHz repetition rate. The ultrabroadband seed is based on stable white-light generation from 420 fs long pulses in a YAG plate.