TITLE

Coherent elastic waves in a one-dimensional polymer hypersonic crystal

AUTHOR(S)
Walker, P. M.; Sharp, J. S.; Akimov, A. V.; Kent, A. J.
PUB. DATE
August 2010
SOURCE
Applied Physics Letters;8/16/2010, Vol. 97 Issue 7, p073106
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Using the methods of picosecond acoustics, we inject high amplitude hypersonic wavepackets into a polymer superlattice and optically detect the propagating coherent elastic waves. The spectrum of the optically detected signal shows the elastic modes typical for folded phonon dispersion curves. The experimental results and related modeling show the feasibility of using polymer one-dimensional hypersonic crystals as acoustic devices in the gigahertz frequency range.
ACCESSION #
52997953

 

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