Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education and Hunan Provincial Key Laboratory of Low‐Dimensional Structural Physics and Devices, School of Physics and Electronics Hunan University Changsha China
Jie Li
Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education and Hunan Provincial Key Laboratory of Low‐Dimensional Structural Physics and Devices, School of Physics and Electronics Hunan University Changsha China
Shuohan Huang
Department of Chemistry Missouri University of Science and Technology Rolla Missouri
Longyu Hu
Department of Physics and Astronomy Clemson Nanomaterials Institute, Clemson University Clemson South Carolina
Lili Miao
Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education and Hunan Provincial Key Laboratory of Low‐Dimensional Structural Physics and Devices, School of Physics and Electronics Hunan University Changsha China
Chujun Zhao
Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education and Hunan Provincial Key Laboratory of Low‐Dimensional Structural Physics and Devices, School of Physics and Electronics Hunan University Changsha China
Shuangchun Wen
Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education and Hunan Provincial Key Laboratory of Low‐Dimensional Structural Physics and Devices, School of Physics and Electronics Hunan University Changsha China
Vadym N. Mochalin
Department of Chemistry Missouri University of Science and Technology Rolla Missouri
Apparao M. Rao
Department of Physics and Astronomy Clemson Nanomaterials Institute, Clemson University Clemson South Carolina
Abstract 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 Ti2CT x MXene nanosheets dispersed in deionized water in the visible to near‐infrared regime, highlighting the broadband nonlinear optical (NLO) response of Ti2CT x MXene. Using ultrafast pulsed laser excitation, the nonlinear refractive index n2 and the third‐order nonlinear susceptibility χmonolayer3 of Ti2CT x MXene were measured to be ∼10−13 m2/W and ∼ 10−10 esu, respectively. Leveraging the large optical nonlinearity of Ti2CT 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.
