Lifetime of sub-THz coherent acoustic phonons in a GaAs-AlAs superlattice

Lifetime of sub-THz coherent acoustic phonons in a GaAs-AlAs superlattice

We measure the lifetime of the zone-center 340 GHz longitudinal phonon mode in a GaAs-AlAs superlattice excited and probed with femtosecond laser pulses. By comparing measurements conducted at room temperature and liquid nitrogen temperature, we separate the intrinsic (phonon-phonon scattering) and...

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Main Authors: Maznev, Alexei (Contributor), Hofmann, Felix (Contributor), Jandl, Adam Christopher (Contributor), Esfarjani, Keivan (Contributor), Bulsara, Mayank (Contributor), Fitzgerald, Eugene A. (Contributor), Chen, Gang (Contributor), Nelson, Keith Adam (Contributor)
Other Authors: Massachusetts Institute of Technology. Materials Processing Center (Contributor), Massachusetts Institute of Technology. Department of Chemistry (Contributor), Massachusetts Institute of Technology. Department of Materials Science and Engineering (Contributor), Massachusetts Institute of Technology. Department of Mechanical Engineering (Contributor), Massachusetts Institute of Technology. School of Engineering (Contributor)
Format: Article
Language:English
Published: American Institute of Physics (AIP), 2013-04-11T19:32:20Z.
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