Patent ID: 6847671
Filing Date: 2005-01-25
Classification: H01S

Abstract:
1. A gas discharge laser, comprising: a housing; a first electrode; a second electrode; a second electrode support; a first cross-flow blower section including a plurality of blades, further including a plurality of internal hubs and two end hubs, each of said end hubs coupling with a shaft and defining a cylindrical form extending along a cylindrical axis of the blower section; a second cross-flow blower section including a plurality of blades, further including a plurality of internal hubs and two end hubs, each of said end hubs coupling with a shaft and defining a cylindrical form coaxial with the cylindrical form of the first cross-flow blower section, wherein the blower sections are disposed longitudinally along the cylindrical axis so that two end hubs of the blower sections are adjacent to each other; and a flange supporting the adjacent hubs of the first and second blower sections, wherein the flange is attached to the housing in an area opposite the electrodes; said flange also having a leading edge and a trailing edge with respect to a direction of gas flow, wherein part of the trailing edge of the flange is located inside a cylindrical volume defined by the combined cylindrical forms of the blower sections to permit gas flowing through the two blower sections to combine.