Abstract
Ag-nanoparticles were embedded in 56GeS2–24Ga2S3–20KBr chalcohalide glass with average size varying from 100 to 300 nm. A large femtosecond optical Kerr effect indicated an enhancement of third-order optical nonlinearity due to Ag-nanoparticles observed by AFM images. Among these Ag-nanoparticles-embedded chalcohalide glass samples, the sample (c) with the second largest implanting dose 1 × 1017 ions/cm2 showed the largest value of χ(3) 5.34 × 10−13 esu, which was ten times larger than that of the substrate. The nonlinear relation between the implanted dose and third-order optical nonlinearity is strongly related to the intrinsic local field and Ag-nanoparticles interaction in the glasses.
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