Efficient mid-infrared dispersive wave generation in dispersion-engineered Si3N waveguides pumped at 2 μm

We demonstrate efficient generation of mid-infrared dispersive wave at 3.5 pm in a Si 3 N 4 waveguide pumped by a 2090nm femtosecond mode-locked fiber laser. The 8% maximum efficiency allows for a milliwatt-level average power mid-infrared pulse.