Patent ID: 8902399

Claim:
An immersion lithographic apparatus comprising: a substrate table constructed and arranged to support a substrate; a projection system constructed and arranged to project a patterned beam of radiation onto a target portion of the substrate; a liquid that fills a space between the projection system and the substrate; and a cleaning system for cleaning a predetermined position on a component in the immersion lithographic apparatus in situ, said cleaning system being arranged to provide a localized cleaning environment in proximity of the predetermined position on the component to be cleaned, the system further being arranged to provide the localized cleaning environment substantially independent of a type of contamination present at the predetermined position, wherein the cleaning system comprises a plasma system for locally providing a plasma and an ultraviolet laser beam to the proximity of the predetermined position such that the ultraviolet laser beam passes through the plasma, wherein the component to be cleaned comprises an optical element, and wherein the type of contamination is selected from the group consisting of resist particles, metal particles, and oxide particles.