Patent ID: 8000212
Filing Date: 2011-08-16
Classification: G01J,H05G

Abstract:
1. An extreme ultraviolet light system comprising: a drive laser system that produces an amplified light beam; a target material delivery system configured to produce a target material at a target location within a vacuum space defined within a chamber, wherein the vacuum chamber houses an extreme ultraviolet light collector configured to collect extreme ultraviolet light emitted from the target material when the amplified light beam crosses the target location and strikes the target material; a beam delivery system including a set of optical components and being configured to receive the amplified light beam emitted from the drive laser system and to direct the amplified light beam toward the target location; a metrology system comprising: a controller connected to the optical sensor and to at least one component within the beam delivery system to modify a position of the at least one component based on the output of the optical sensor.