Third-order nonlinear optical responses of CuO nanosheets for ultrafast pulse generation  

作　　者：Li Dong Hongwei Chu Ying Li Shengzhi Zhao Dechun Li 

机构地区：[1]School of Information Science and Engineering,Shandong University,Qingdao,266237,China [2]Key Laboratory of Colloid and Interface Chemistry,Ministry of Education,School of Chemistry and Chemical Engineering,Jinan,250100,China

出　　处：《Journal of Materiomics》2022年第2期511-517,共7页无机材料学学报（英文）

基　　金：The National Natural Science Foundation of China(12004213,21872084).

摘　　要：As a representative transition metal oxide,cupric oxide(CuO)has attracted a lot of interest in miscel-laneous fields.In the present work,the prominent third-order nonlinear optical(NLO)features of CuO nanosheets were demonstrated via the typical Z-scan technique at 1 m m.The open-aperture(OA)Z-scan measurements at different intensities clearly showed that CuO nanosheets possessed the saturable ab-sorption(SA),reverse saturable absorption(RSA)and optical limiting behaviors.The closed-aperture(CA)Z-scan technology was implanted to investigate the nonlinear refractive index and the third-order nonlinear susceptibility.In virtue of the strong nonlinear optical absorption properties of CuO nano-sheets,a stable all-solid-state mode-locked laser with the as-prepared CuO nanosheets as saturable absorber at 1.06 m m was realized for the first time.Our work confirmed that CuO nanosheets exhibited outstanding NLO properties,which might stimulate the development in ultrafast photonics and nonlinear optics.

关 键 词：Transition metal oxide Nonlinear saturable absorption Nonlinear susceptibility Saturable absorber MODE-LOCKING 

分 类 号：TQ17[化学工程—硅酸盐工业]