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Ultrafast, Element-Specific, Demagnetization Dynamics Probed using Coherent High Harmonic Beams

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Abstract

High harmonics from a tabletop laser are used to probe ultrafast demagnetization of a compound material (Permalloy) with elemental selectivity. We achieve the highest time resolution, element-specific, measurements to date at 55 fs.

© 2010 Optical Society of America

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