Patent ID: 6212217
Filing Date: 2001-04-03
Classification: G02B,G03F,H01S

Abstract:
A smart narrow band electric discharge laser for producing an output laser beam said laser comprising:A) a laser from;B) a laser chamber adjustably mounted in said frame;C) a laser gas contained within said chamber;D) two elongated spaced apart electrodes contained within said chamber, said electrodes and laser gas between them defining a gain medium;E) an output coupler;F) a line narrowing module comprising a prism beam expander, an R.sub.MAX mirror and a bendable grating defining a grating curvature, said line narrowing module and its optical components and the output coupler defining a resonance cavity;G) a wavemeter for detecting laser beam parameters including at least pulse energy, wavelength and bandwidth;H) a computer controller; andI) a grating curvature positioner controlled by said computer controller to adjust the grating curvature based on bandwidth information provided to said computer controller by said wavemeter.