摘要
MXenes,a new class of 2D transition metal carbides,nitrides,and carbonitrides,have attracted much attention due to their outstanding properties.Here,we report the broadband spatial self-phase modulation of Ti2CTx MXene nanosheets dispersed in deionized water in the visible to near-infrared regime,highlighting the broadband nonlinear optical(NLO)response of Ti2CTx MXene.Using ultrafast pulsed laser excitation,the nonlinear refractive index n2 and the thirdorder nonlinear susceptibility χ^(3)monolayer of Ti2CTx MXene were measured to be^10^−13 m^2/W and ~10^−10 esu,respectively.Leveraging the large optical nonlinearity of Ti2CTx MXene,an all-optical modulator in the visible regime was fabricated based on the spatial cross-phase modulation effect.This work suggests that 2D MXenes are ideal broadband NLO materials with excellent prospects in NLO applications.
出处
《InfoMat》
SCIE
CAS
2020年第3期601-609,共9页
信息材料（英文）
基金
National Science Foundation,Grant/Award Number:MoMS 1930881
China Scholarship Council,Grant/Award Number:201706130028
National Natural Science Fund Foundation of China,Grant/Award Number:61775056
Natural Science Foundation of Hunan Province,Grant/Award Number:2017JJ1013
Research Fund of Science and Technology on Plasma Physics Laboratory,Grant/Award Number:6142A0403050717
This work was supported by the National Natural Science Foundation of China(NSFC)(61775056)
Natural Science Foundation of Hunan Province(2017JJ1013)
Research Fund of Science and Technology on Plasma Physics Laboratory(6142A0403050717)
The support provided by China Scholarship Council(CSC)during a visit of Jun Yi to Clemson University is acknowledged.This material is based upon work supported by the National Science Foundation under Grant No.MoMS 1930881.
