Abstract
With the development of laser technology, the importance of laser protection has put an urgent demand for high-performance 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 × 10−3 cm/GW, 136.17 × 10−3 cm/GW at 10.4 GW/cm2 and 20.8 GW/cm2, 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.
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