Lifetimes of Confined Acoustic Phonons in Ultrathin Silicon Membranes

Lifetimes of Confined Acoustic Phonons in Ultrathin Silicon Membranes

We study the relaxation of coherent acoustic phonon modes with frequencies up to 500 GHz in ultrathin free-standing silicon membranes. Using an ultrafast pump-probe technique of asynchronous optical sampling, we observe that the decay time of the first-order dilatational mode decreases significantly...

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Bibliographic Details
Main Authors: Cuffe, John, Ristow, O., Chavez, E., Shchepetov, A., Chapuis, P. O., Alzina, F., Hettich, M., Prunnila, M., Ahopelto, Jouni, Dekorsy, T., Torres, C. M. Sotomayor
Other Authors: Massachusetts Institute of Technology. Department of Mechanical Engineering
Format: Article
Language:en_US
Published: American Physical Society 2013
Online Access:http://hdl.handle.net/1721.1/78653

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