Patent ID: 8847181
Filing Date: 2014-09-30
Classification: H05G

Abstract:
1. An extreme ultraviolet light generation system, comprising: a laser apparatus configured to output a laser beam for generating extreme ultraviolet light; a chamber provided with a window, through which the laser beam from the laser apparatus enters the chamber; a target supply unit configured to output a target toward a predetermined position inside the chamber; a laser beam focusing optical system positioned to reflect the laser beam toward the predetermined position inside the chamber; a detector configured to aim at a point in a path of the laser beam downstream from the predetermined position for detecting an image of the laser beam at the predetermined position; a target position adjusting mechanism for adjusting a direction into which the target is to be outputted; a laser beam focus position adjusting mechanism for adjusting a focus position of the laser beam; and a controller for controlling the target position adjusting mechanism and the laser beam focus position adjusting mechanism based on the image detected by the detector.