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Effect of concentration on the formation time of diffraction rings in spatial self-phase modulation

Chinese Optics Letters 2022年第1期20卷 112-116页

作者：何奕林张景迪肖思王迎威何军 Hunan Key Laboratory of Nanophotonics and Devices School of Physics and ElectronicsCentral South UniversityChangsha 410083China

A new unsaturated wind-chime model is proposed for calculating the formation time of the diffraction rings induced by spatial self-phase modulation(SSPM) in molybdenum disulfide *** optimize the traditional wind-chime model,the concentration variable of 2 D materials was *** results of the unsaturated wind-chime model match quite well with the SSPM experimental results of molybdenum *** on this model,the shortest formation time of diffraction rings and their corresponding concentration and light intensity can be predicted using limited ***,by increasing the viscosity coefficient of the solution,the response time of the diffraction ring,to reach the maximum value,can be significantly *** has advanced significance in shortening the response time of photonic diodes.

关键词： spatial self-phase modulation wind-chime model nonlinear optics

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Ti2CTx MXene-based all-optical modulator

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InfoMat 2020年第3期2卷 601-609页

作者： Jun Yi Jie Li Shuohan Huang Longyu Hu Lili Miao Chujun Zhao Shuangchun Wen Vadym N.Mochalin Apparao M.Rao 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 ElectronicsHunan UniversityChangshaChina Department of Physics and Astronomy Clemson Nanomaterials InstituteClemson UniversityClemsonSouth Carolina Department of Chemistry Missouri University of Science and TechnologyRollaMissouri Department of Materials Science and Engineering Missouri University of Science and TechnologyRollaMissouri

MXenes,a new class of 2D transition metal carbides,nitrides,and carbonitrides,have attracted much attention due to their outstanding ***,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 *** 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,*** the large optical nonlinearity of Ti2CTx MXene,an all-optical modulator in the visible regime was fabricated based on the spatial cross-phase modulation *** work suggests that 2D MXenes are ideal broadband NLO materials with excellent prospects in NLO applications.

关键词： 2D materials all-optical modulator MXene spatial cross-phase modulation spatial self-phase modulation

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