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An active volume scaling in bore and length of an Sr atom laser excited in a nanosecond pulsed longitudinal He-SrBr2 discharge is carried out. The optimal discharge conditions for achieving of a maximal average output power at several Sr atom and ion lines are found. At multiline operation, a record average output power of 4.26 W is obtained, more than 90% of which is concentrated on the 6.45- mum Sr atom line.
Date of Publication: March 2009