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Method for optimizing output in ultrashort-pulse multipass laser amplifiers with selective use of a spectral filter

United States Patent

July 10, 2007
View the Complete Patent at the US Patent & Trademark Office
A method for optimizing multipass laser amplifier output utilizes a spectral filter in early passes but not in later passes. The pulses shift position slightly for each pass through the amplifier, and the filter is placed such that early passes intersect the filter while later passes bypass it. The filter position may be adjust offline in order to adjust the number of passes in each category. The filter may be optimized for use in a cryogenic amplifier.
Backus; Sterling J. (Erie, CO), Kapteyn; Henry C. (Boulder, CO)
The Regents of the University of Colorado (Boulder, CO)
11/ 501,206
August 8, 2006
GOVERNMENT SUPPORT The present invention was made with government support as follows, and the U.S. government has certain rights in the invention. National Science Foundation (NSF), PHY-0096822, "Group Research in Atomic, Molecular and Optical Physics at JILA", Carl Wieman PI. Department of Energy National Nuclear Security Agency, DE-FG03-02NA00063, "Coherent imaging of laser-plasma interactions using XUV high harmonic radiation", Henry Kapteyn PI. National Science Foundation (NSF), Major Research Instrumentation grant, ECS-0216205, "Development of a high-average power ultrafast laser", Margaret Murnane PI.