Ultrafast extreme ultraviolet holography: dynamic monitoring of surface deformation.
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.
Tobey
Ra'anan I
RI
Department 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. Ra.Tobey@colorado.edu
Siemens
Mark E
ME
Cohen
Oren
O
Murnane
Margaret M
MM
Kapteyn
Henry C
HC
Nelson
Keith A
KA