▎ 摘　　要

With the development of laser technology, the importance of laser protection has put an urgent demand for highperformance optical confinement materials. Herein, reduced Graphene oxide-TiO2 (rGO-TiO2) nanocomposites were rationally prepared by solvothermal method, and the rGO nanoparticles were homogeneously grown by oxygen bonding to improve the optical confinement properties. By using Z scanning system (1030 nm, 340fs), the nonlinear properties of rGO-TiO2 nanocomposites were measured to show theoretical nonlinear coefficients with 572.01 x 10(-3) cm/GW, 136.17 x 10(-3) cm/GW at 10.4 GW/cm(2) and 20.8 GW/cm(2) , respectively, which are 5-20 times of pure GO. Furthermore, the normalized transmittance of the rGO-TiO2 nanocomposites reaches a minimum of 30%, showing that the materials have good nonlinear and optical limit (OL) properties, indicating that this work expands the choice of optical limit materials.& nbsp;& nbsp;