<div style="text-align:justify;"> The effects of the main parameters of argon flux, oxygen flux and beam voltage on the surface morphology, transmittance spectrum and laser damage of the HfO<sub>...<div style="text-align:justify;"> The effects of the main parameters of argon flux, oxygen flux and beam voltage on the surface morphology, transmittance spectrum and laser damage of the HfO<sub>2</sub> single layers prepared by ion beam sputtering are studied. The HfO<sub>2</sub> amorphous single layers have porous surface morphologies. Different processes will cause differences in coatings absorption and surface morphology, which in turn will cause changes in the spectral transmittance curve. The ion beam sputtering HfO<sub>2</sub> single layers have high content of argon (4.5% - 8%). The laser damage of HfO<sub>2</sub> single layers is related to argon inclusions and non-stoichiometric defects. The changes of argon flux and beam voltage have a greater impact on argon content and O/Hf ratio. When the argon content in the coatings is lower and the O/Hf ratio is higher, the laser damage thresholds of the HfO<sub>2</sub> single layers are higher. </div>展开更多
文摘<div style="text-align:justify;"> The effects of the main parameters of argon flux, oxygen flux and beam voltage on the surface morphology, transmittance spectrum and laser damage of the HfO<sub>2</sub> single layers prepared by ion beam sputtering are studied. The HfO<sub>2</sub> amorphous single layers have porous surface morphologies. Different processes will cause differences in coatings absorption and surface morphology, which in turn will cause changes in the spectral transmittance curve. The ion beam sputtering HfO<sub>2</sub> single layers have high content of argon (4.5% - 8%). The laser damage of HfO<sub>2</sub> single layers is related to argon inclusions and non-stoichiometric defects. The changes of argon flux and beam voltage have a greater impact on argon content and O/Hf ratio. When the argon content in the coatings is lower and the O/Hf ratio is higher, the laser damage thresholds of the HfO<sub>2</sub> single layers are higher. </div>
