摘要:
Burners and methods for producing fused silica members. The burner includes seven gas-emitting regions, including four regions for emitting a mixture of oxygen and combustible gas.
摘要:
Fused silica articles exhibiting improved internal transmission and decreased absorption change when irradiated with a laser when compared with fused silica articles containing lower levels of aluminum. The articles also exhibit induced transmission when irradiated with a laser. The articles also exhibit improved off-axis refractive index homogeneity.
摘要:
Disclosed is a synthetic silica glass optical material having high resistance to optical damage by ultraviolet radiation in the ultraviolet wavelength range, particularly in the wavelength region of less than about 250 nm and particularly, exhibiting a low laser induced density change. The synthetic silica glass optical material of the present invention contains at least about 0.1 ppm of aluminum and H2 concentration levels greater than about 0.5×1017 molecules/cm2. Additionally, the synthetic silica optical material of the present invention exhibits an H2 to Al ratio of greater than about 1.2, as measured in ×1017/cm3 molecules H2 per ppm Al.
摘要翻译:公开了一种合成石英玻璃光学材料,其特征在于在小于约250nm的波长区域,特别是具有低激光诱导密度变化的紫外线波长范围内具有高抗紫外线辐射的光学损伤。 本发明的合成石英玻璃光学材料包含至少约0.1ppm的铝和大于约0.5×10 17分子/ cm 2的H 2 O 2浓度水平 SUP>。 此外,本发明的合成二氧化硅光学材料的显示出H 2/2比率大于约1.2,如在x 10 17 / cm 3 / SUP>分子H 2 2 / ppm。
摘要:
A method for preparing high-purity, bulk fused silica includes supplying silane gas, a gaseous fuel, and oxygen gas to a combustion burner. Silica particles are formed by passing the silane gas into a flame formed by the combustion reaction of the gaseous fuel with the oxygen gas while maintaining the ratio of the flow rate of the gaseous fuel to the flow rate of the silane gas no less than twelve and the ratio of the flow rate of the gaseous fuel to the flow rate of the oxygen gas no less than three. The silica particles formed are immediately deposited onto a hot bait to form a boule.