摘要:
This invention relates to an optical member made of highly transparent, high-purity synthetic silica glass, to a method for manufacturing a blank or an optical member of such glass, and to the optical members themselves. The optical members have an absolute refractive index, n.sub.d, of 1.460 or more and a hydrogen molecule concentration of at least 5.times.10.sup.16 molecules/cm.sup.3 uniformly distributed throughout the glass and are particularly well suited for use in apparatus in which they are exposed to a high-power laser beam such as that produced by an excimer laser.
摘要翻译:本发明涉及由高透明,高纯度的合成石英玻璃制成的光学构件,制造这种玻璃的坯料或光学构件的方法以及光学构件本身。 光学构件的绝对折射率nd为1.460以上,氢分子浓度至少为5×10 16分/ cm 3,均匀分布在整个玻璃中,特别适用于将其暴露于高分子量的设备中, 功率激光束,例如由准分子激光器产生的激光束。