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Apparatus and method for optical pulse measurement

United States Patent

6,008,899
December 28, 1999
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
Practical third-order frequency-resolved optical grating (FROG) techniques for characterization of ultrashort optical pulses are disclosed. The techniques are particularly suited to the measurement of single and/or weak optical pulses having pulse durations in the picosecond and subpicosecond regime. The relative quantum inefficiency of third-order nonlinear optical effects is compensated for through i) use of phase-matched transient grating beam geometry to maximize interaction length, and ii) use of interface-enhanced third-harmonic generation.
Trebino; Rick P. (Livermore, CA), Tsang; Thomas (Brooklyn, NY), Fittinghoff; David N. (San Diego, CA), Sweetser; John N. (Livermore, CA), Krumbuegel; Marco A. (Danville, CA)
Sandia Corporation (Livermore, CA)
08/ 878,301
June 18, 1997
STATEMENT OF GOVERNMENT INTEREST This invention was made with Government support under Contract DE-AC04-94DP85000 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.