Characterization of the second- and third-harmonic optical susceptibilities of atomically thin tungsten diselenide

Henrique G. Rosa, Ho Yi Wei, Ivan Verzhbitskiy +6

We report the first detailed characterization of the sheet third-harmonic optical susceptibility, ${\chi }_s^{(3)}$, of tungsten diselenide (WSe${}_2$). With a home-built confocal micr…