Optical harmonic generation in monolayer group-VI transition metal dichalcogenides

Monolayer transition metal dichalcogenides (TMDs) exhibit high nonlinear optical (NLO) susceptibilities. Experiments on ${\mathrm{MoS}}_{2}$ have indeed revealed very large second-order (${\ensuremath{\chi}}^{(2)}$) and third-order (${\ensuremath{\chi}}^{(3)}$) optical susceptibilities. However, thi... View More