Ultrafast extreme ultraviolet holography: dynamic monitoring of surface deformation
R. TobeyDepartment 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. [email protected]Mark E. SiemensJILAUniversity of Colorado and NISTNSF Engineering Research Center in Extreme Ultraviolet Science and TechnologyOren CohenJILAUniversity of Colorado and NISTNSF Engineering Research Center in Extreme Ultraviolet Science and TechnologyMargaret M. MurnaneJILAUniversity of Colorado and NISTNSF Engineering Research Center in Extreme Ultraviolet Science and TechnologyHenry C. KapteynJILAUniversity of Colorado and NISTNSF Engineering Research Center in Extreme Ultraviolet Science and TechnologyKeith A. NelsonMassachusetts Institute of Technology
2007en
ABI
Аннотация
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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