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Coherent phonon optics in a chip with an electrically controlled active device

Akimov, Andrey; Poyser, Caroline L.; Kent, Anthony J.; CAMPION, RICHARD


Caroline L. Poyser


Phonon optics concerns operations with high-frequency acoustic waves in solid media in a similar way to how traditional optics operates with the light beams (i.e. photons). Phonon optics experiments with coherent terahertz and sub-terahertz phonons promise a revolution in various technical applications related to high-frequency acoustics, imaging, and heat transport. Previously, phonon optics used passive methods for manipulations with propagating phonon beams that did not enable their external control. Here we fabricate a phononic chip, which includes a generator of coherent monochromatic phonons with frequency 378?GHz, a sensitive coherent phonon detector, and an active layer: a doped semiconductor superlattice, with electrical contacts, inserted into the phonon propagation path. In the experiments, we demonstrate the modulation of the coherent phonon flux by an external electrical bias applied to the active layer. Phonon optics using external control broadens the spectrum of prospective applications of phononics on the nanometer scale.


Akimov, A., Poyser, C. L., Kent, A. J., & CAMPION, R. (2015). Coherent phonon optics in a chip with an electrically controlled active device. Scientific Reports, 5,

Journal Article Type Article
Acceptance Date Jan 6, 2015
Publication Date Feb 5, 2015
Deposit Date May 1, 2018
Publicly Available Date Feb 21, 2019
Journal Scientific Reports
Print ISSN 2045-2322
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 5
Article Number 8279
Public URL
Publisher URL
PMID 00034883


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