Open AccessTi 2 CT x MXene‐based all‐optical modulator
Author(s) -
Yi Jun,
Li Jie,
Huang Shuohan,
Hu Longyu,
Miao Lili,
Zhao Chujun,
Wen Shuangchun,
Mochalin Vadym N.,
Rao Apparao M.
Publication year - 2020
Publication title -
infomat
Language(s) - English
Resource type - Journals
ISSN - 2567-3165
DOI - 10.1002/inf2.12052
Subject(s) - mxenes , materials science , ultrashort pulse , photonics , broadband , modulation (music) , optoelectronics , nitride , refractive index , laser , optics , nanotechnology , physics , layer (electronics) , acoustics
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 Ti 2 CT x MXene nanosheets dispersed in deionized water in the visible to near‐infrared regime, highlighting the broadband nonlinear optical (NLO) response of Ti 2 CT x MXene. Using ultrafast pulsed laser excitation, the nonlinear refractive index n 2 and the third‐order nonlinear susceptibility χ monolayer 3of Ti 2 CT x MXene were measured to be ∼10 −13 m 2 /W and ∼ 10 −10 esu, respectively. Leveraging the large optical nonlinearity of Ti 2 CT x 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.