Patent ID: 6496527
Filing Date: 2002-12-17
Classification: H01S

Abstract:
An ultraviolet laser apparatus having gas for ultraviolet laser sealed inside a ultraviolet laser chamber, and means for exciting the gas for ultraviolet laser by effecting, pulse discharges inside the chamber to oscillate a pulsed laser, wherein xenon gas is supplied to inside the chamber while quantity and concentration of the supplied xenon gas is controlled to reduce burst and spike phenomena appearing in ultraviolet laser output, comprising:xenon gas adsorption means for causing xenon gas to be adsorbed in the chamber wherein xenon gas has not been adsorbed on surface of walls thereof, and verification means for verifying that concentration of xenon gas inside the chamber has a concentration when the xenon gas absorption means have caused xenon gas to be adsorbed on the surface of the walls inside the chamber, and the xenon gas has been supplied in such quantity that concentration of xenon gas inside the chamber will reach the concentration.