Femtosecond nonlinear ultrasonics in gold probed with ultrashort surface plasmons
Name
Nelson_Femtosecond nonlinear.pdf
Size
1 MB
Format
Adobe PDF
Checksum (MD5)
1d71f1b900ef6e1273d11dc9ff500be7
Author(s)
Temnov, Vasily V.
Klieber, Christoph
Thomay, Tim
Knittel, Vanessa
Leitenstorfer, Alfred
Makarov, Denys
Albrecht, Manfred
Bratschitsch, Rudolf
Nelson, Keith Adam
Date Issued
February 2013
Journal
Nature Communications
Publisher
Nature Publishing Group
Citation
Temnov, Vasily V., Christoph Klieber, Keith A. Nelson, Tim Thomay, Vanessa Knittel, Alfred Leitenstorfer, Denys Makarov, Manfred Albrecht, and Rudolf Bratschitsch. “Femtosecond nonlinear ultrasonics in gold probed with ultrashort surface plasmons.” Nature Communications 4 (February 12, 2013): 1468. © 2013 Nature Publishing Group
Version
Final published version
Abstract
Fundamental interactions induced by lattice vibrations on ultrafast time scales have become increasingly important for modern nanoscience and technology. Experimental access to the physical properties of acoustic phonons in the terahertz-frequency range and over the entire Brillouin zone is crucial for understanding electric and thermal transport in solids and their compounds. Here we report on the generation and nonlinear propagation of giant (1 per cent) acoustic strain pulses in hybrid gold/cobalt bilayer structures probed with ultrafast surface plasmon interferometry. This new technique allows for unambiguous characterization of arbitrary ultrafast acoustic transients. The giant acoustic pulses experience substantial nonlinear reshaping after a propagation distance of only 100 nm in a crystalline gold layer. Excellent agreement with the Korteveg-de Vries model points to future quantitative nonlinear femtosecond terahertz-ultrasonics at the nano-scale in metals at room temperature.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike 3.0
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1038/ncomms2480
