Patent ID: 6771683
Filing Date: 2004-08-03
Classification: H01S

Abstract:
An excimer or molecular fluorine laser system, comprising:a discharge chamber filled with a gas mixture at least including a halogen-containing molecular species and a buffer gas; a discharge circuit; a plurality of electrodes within the discharge chamber and connected to the discharge circuit for energizing the gas mixture; a resonant cavity including the discharge chamber for generating a laser beam; and an intracavity homogenizer for homogenizing an intensity profile of the laser beam generated in the resonator, the intracavity homogenizer at least including: a first bi-prism and a second bi-prism disposed at opposite ends of the resonant cavity and having the discharge chamber disposed therebetween, and wherein optical axes of the first bi-prism and the second bi-prism are each at least substantially parallel to the optical axis of the laser beam.