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Generation of VUV, EUV, and X-ray Light Using VUV-UV-VIS Lasers

United States Patent Application

20170222393
A1
View the Complete Application at the US Patent & Trademark Office
A method for extending and enhancing bright coherent high-order harmonic generation into the VUV-EUV-X-ray regions of the spectrum involves a way of accomplishing phase matching or effective phase matching of extreme upconversion of laser light at high conversion efficiency, approaching 10.sup.-3 in some spectral regions, and at significantly higher photon energies in a waveguide geometry, in a self-guiding geometry, a gas cell, or a loosely focusing geometry, containing nonlinear medium. The extension and enhancement of the coherent VUV, EUV, X-ray emission to high photon energies relies on using VUV-UV-VIS lasers of shorter wavelength. This leads to enhancement of macroscopic phase matching parameters due to stronger contribution of linear and nonlinear dispersion of both atoms and ions, combined with a strong microscopic single-atom yield.
Popmintchev, Tenio V. (Boulder, CO), Popmintchev, Dimitar V. (Boulder, CO), Murnane, Margaret M. (Boulder, CO), Kapteyn, Henry C. (Boulder, CO)
15/ 490,709
April 18, 2017
[0002] This invention was made with government support under grant numbers FA9550-10-1-0561--U.S. Air Force; W911NF-13-1-0259--U.S. Army Research Office; PHY1068706--National Science Foundation; PHY1125844--National Science Foundation; and DE-SC0008803--U.S. Dept. of Energy. The government has certain rights in the invention.