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Opt Lett. 2007 Feb 1;32(3):286-8.

Ultrafast extreme ultraviolet holography: dynamic monitoring of surface deformation.

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  • 1Department of Physics and JILA, University of Colorado and NIST, and NSF Engineering Research Center in Extreme Ultraviolet Science and Technology, Boulder, Colorado 80309-0440, USA.


We demonstrate femtosecond time-resolved dynamic Gabor holography using highly coherent extreme ultraviolet light generated by high harmonic upconversion of a femtosecond laser. By reflecting this light from an impulsively heated surface, we implement a simple and robust single-reflection geometry for phase-sensitive holographic detection at extreme UV wavelengths. Using this setup, we study the ultrafast deformation and subsequent acoustic oscillations within a thin metal film. These measurements exhibit subpicometer spatial sensitivity in the vertical dimension.

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