摘要
Nanomaterials with promising optical,mechanical and electrical properties have garnered significant in-terest in photonics and electronics.However,the integration of nanomaterials with diverse characteristics for potential ultrafast photonics applications has emerged as a focal point.In this study,two-dimensional MXene(Ti_(3)C_(2)T_(x))and CuO nanoparticles were synthesized to create heterostructure materials.The surface morphology,chemical composition and nonlinear absorption properties of the heterostructure materials were investigated.First-principle-based theoretical calculations were performed to explore the electronic and optical properties of the Ti_(3)C_(2)T_(x)/CuO heterojunction,offering insights into its essential properties and supporting the potential optoelectronic applications.Importantly,the Ti_(3)C_(2)T_(x)/CuO heterojunction ef-fectively functioned as saturable absorbers in ultrafast lasers.Incorporating the Ti_(3)C_(2)T_(x)/CuO-based sat-urable absorber into a net-anomalous dispersion fiber cavity generated stable conventional-soliton pulses with duration of 495 fs.Additionally,adjusting cavity dispersion to net-normal allowed the Ti_(3)C_(2)T_(x)/CuO-based saturable absorber to generate dissipative soliton with a pulse width of 22 ps.The performance of Ti_(3)C_(2)T_(x)/CuO-based fiber lasers demonstrates enhancements over previous works.This study confirms that the Ti_(3)C_(2)T_(x)/CuO heterojunction is a promising nonlinear optical material for ultrafast applications and advanced MXene-based photonic devices.
基金
supported by the National Key R&D Program of China(No.2022YFB4601101)
the National Natural Science Foundation of China(No.12075190)
the China Postdoctoral Science Foundation(No.2023M741781)
the Key Industry Innovation Chain Project of Shaanxi Province(No.2022ZDLSF04-09)
the Shaanxi Province Medical Technology Integration High-end Medical Equipment Common Technology Research and Development Plat-form(No.2023GXJS-01)
the Shaanxi Fundamental Science Research Project for Mathematics and Physics(No.23JSY019).
