Femtosecond VECSELs with up to 1-W average output power

We developed novel low-dispersion VECSELs modelocked with fast QD-SESAMs. The first femtosecond modelocked QD-VECSEL achieves 1 W average power with 784-fs pulses. At lower power, we achieved sub-500-fs pulses both with QW- and QD-VECSELs.