Optical Generation of Gigahertz-Frequency Shear Acoustic Waves in Liquid Glycerol
Author(s)Andrieu, S.; Klieber, Christoph; Nelson, Keith Adam; Pezeril, Thomas
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Picosecond laser ultrasonic techniques for acoustic wave generation and detection have been employed to probe shear acoustic waves in liquid glycerol at gigahertz frequencies. The experimental approach uses a unique laser pulse shaping technique and a crystallographically canted metal layer to generate frequency-tunable transverse acoustic waves, and uses time-domain coherent Brillouin scattering to detect the waves after they propagate through a liquid layer and into a solid substrate. A linear frequency dependence is found for both the shear speed and attenuation rate in glycerol.
DepartmentMassachusetts Institute of Technology. Institute for Soldier Nanotechnologies; Massachusetts Institute of Technology. Department of Chemistry
Physical Review Letters
American Physical Society
Pezeril, T. et al. “Optical Generation of Gigahertz-Frequency Shear Acoustic Waves in Liquid Glycerol.” Physical Review Letters 102.10 (2009): 107402. (C) 2010 The American Physical Society.
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