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Quasi-phase matching and quantum control of high harmonic generation in waveguides using counterpropagating beams

United States Patent

November 9, 2010
View the Complete Patent at the US Patent & Trademark Office
All-optical quasi-phase matching (QPM) uses a train of counterpropagating pulses to enhance high-order harmonic generation (HHG) in a hollow waveguide. A pump pulse enters one end of the waveguide, and causes HHG in the waveguide. The counterpropagation pulses enter the other end of the waveguide and interact with the pump pulses to cause QPM within the waveguide, enhancing the HHG.
Zhang; Xiaoshi (Superior, CO), Lytle; Amy L. (Boulder, CO), Cohen; Oren (Boulder, CO), Kapteyn; Henry C. (Boulder, CO), Murnane; Margaret M. (Boulder, CO)
Regents of the University of Colorado, a body corp (Denver, CO)
11/ 888,916
August 2, 2007
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 Cooperative Agreement No. EEC-0310717, "NSF Engineering Research Center in Extreme Ultraviolet Science and Technology." Department of Energy, National Nuclear Security Administration, Grant No. DE-FG52-06NA26151, "Investigations of Laser Materials Interactions using Ultrafast Short-Wavelength Light."