Breakdown of glass composites with a TiO2 nanodimensional coating by laser ablation

The laser-ablation-induced breakdown of glass composites with nanodimensional coatings obtained by the sol–gel method is studied. It is found that the threshold energy of breakdown depends on the refractive index and light transmission coefficient of the sample. It increases with the refractive index and decreases with decreasing the light transmission coefficient in the range 400–900 nm. This can be explained by the difference in the reflection coefficients of the samples.