Murnane, Margaret M., authorKapteyn, Henry C., authorDollinger, Robert, authorThompson, Sarah, authorBartels, Randy, authorBackus, Sterling, authorOptical Society of America, publisher2007-01-032007-01-032001Backus, Sterling, et al., High-Efficiency, Single-Stage 7-kHz High-Average-Power Ultrafast Laser System, Optics Letters 26, no. 7 (April 1, 2001): 465-467.http://hdl.handle.net/10217/67982We demonstrate a simple and practical single-stage ultrafast laser amplifier system that operates at a repetition frequency from 1 to 10 kHz, with millijoule pulse energy and as much as 13 W of average power. The repetition rate can be adjusted continuously from 1 to 10 kHz by new all-solid-state pump laser technology. This is to our knowledge the highest average power ever obtained from a single-stage ultrafast laser amplifier system. This laser will significantly increase the average power and the repetition rate that is easily accessible for high-field experiments such as coherent x-ray generation or for laser-synchrotron studies.born digitalarticleseng©2001 Optical Society of America.Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.Text