Nonlinear optical susceptibility of two-dimensional WS measured by hyper Rayleigh scattering: erratum.

This erratum corrects errors in the expressions for ⟨β⟩ and fitted form of I and a consequent data point in Fig. 4 of a recent Letter [Opt. Lett.42, 5018 (2017)OPLEDP0146-959210.1364/OL.42.005018]. It also supplies data for the reference compound para-nitroaniline (pNA). The correction to ⟨β⟩ improves experimental agreement from 46% to within 21% of independent scissors-corrected density functional theory (DFT) calculations. Central findings from the original Letter remain intact.