Grassani, DavideBillat, AdrienPfeiffer, MartinKippenberg, TobiasBrès, Camille-Sophie2021-02-162021-02-162021-02-162018-05-1610.1364/CLEO_SI.2018.SF2A.2https://infoscience.epfl.ch/handle/20.500.14299/175303Enhanced second order nonlinear processes in a Si3N4 waveguide following optically induced χ(2) is demonstrated, enabling the detection of a frequency doubled pulsed train and SFG with >-37 dB conversion efficiency for 18 W pump peak power.Observation of Second Harmonic and Sum Frequency in an Optically Poled Si3N4 Waveguidetext::conference output::conference proceedings::conference paper