METHOD AND APPARATUS FOR MANUFACTURING SILICA-TITANIA EXTREME ULTRAVIOLET ELEMENTS

摘要

Methods and apparatus for manufacturing titania-containing fused silica bodies are disclosed. The titania-containing fused silica bodies are subsequently processed to make extreme ultraviolet soft x-ray masks. The methods and apparatus involve providing powders external to a furnace cavity and depositing the powders in the furnace cavity to form a titania-containing fused silica body.