| Abstract [eng] |
The main limiting factors related to the choice of materials for optical coatings formation - refractive index, absorption, refractive index inhomogeneity, internal stresses in coatings, mechanical resistance of the coating, laser breakdown threshold, and atmospheric stability. Oxide mixtures often have better properties such as optical homogeneity, mechanical stress, process stability and mechanical strength. The purpose of this work to form and characterize thin dielectric layers formed of TiO2/Pr6O11, TiO2/La2O3, Al2O3/Pr6O11 and Al2O3/La2O3 oxide mixtures of these oxides and try to form several multilayer interference coatings. Thin-layer formation and testing were used, these mixtures of oxides: TiO2/La2O3, TiO2/Pr6O11, Al2O3/Pr6O11 and Al2O3/La2O3. In this study we formed 18 samples. Among them were formed several multi-layered structures (anti-reflective coating and dielectric mirror). Investigation of thin-layer characteristics such as the refractive index and absorption, inhomogeneity, stress, nodular defects, laser breakdown threshold showed that in most cases a much better performance was achieved than in ZrO2 oxide case. |
