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Marker: Coherent EUV and soft X-ray beams from tabletop lasers and Applications in nanometrology

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Margaret M. Murnane, JILA and The University of Colorado
When
07 October 2014 from 3:30 PM to 4:30 PM
Where
339 Davey Laboratory
Contact Name
Nitin Samarth
Contact Phone
(814) 863-0136
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Coherent, laser-like, beams with wavelengths spanning from the UV to soft x-ray regions can now be generated from a tabletop-scale femtosecond laser using the high harmonic (HHG) frequency upconversion process.[1] In recent years, rapid advances in increasing the efficiency of HHG have enabled a host of applications in nanoscience and nanotechnology.[2-8] These include probing the elastic properties of thin films of thicknesses << 50 nm, implementing full-field 3D microscopes with record spatial resolutions (≈1.5lamda) in transmission and reflection modes, quantifying how nanoscale energy flow differs from bulk, measuring how fast a material can change its electronic or magnetic state, and finally directly observing for the first time how spin currents can control and enhance magnetization in ultra thin films. Looking to the future, HHG sources at wavelengths down to 1 nm will enable functional imaging of nanostructures with ≈ 5 nm spatial resolution, with elemental and chemical contrast.

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