Nonlinear refraction and nonlinear absorption of As 2 S 3 aqueous solution

Abstract

We report for the first time to our knowledge on the preparation of colloidal solution of chalcogenide semiconductor As2S3 by laser ablation and the measurements of its nonlinear-optical characteristics using Z-scan method at the wavelength of Nd:YAG laser radiation (λ = 1064 nm, τ = 25 ns). The nonlinear refractive index was measured to be −7.5 × 10−18 m2 W−1. Nonlinear absorption coefficient of chalcogenide solution was measured to be 1 cm GW−1.