Sound and noisy light: Optical control of phonons in photoswitchable structures
Name
PhysRevB.92.165107.pdf
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989.3 KB
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Author(s)
Grossman, Jeffrey C.
Sklan, Sophia Robin
Date Issued
October 2015
Journal
Physical Review B
Publisher
American Physical Society
Citation
Sklan, Sophia R., and Jeffrey C. Grossman. "Sound and noisy light: Optical control of phonons in photoswitchable structures." Phys. Rev. B 92, 165107 (October 2015). © 2015 American Physical Society
Version
Final published version
Abstract
We present a means of controlling phonons via optical tuning. Taking as a model an array of photoresponsive materials (photoswitches) embedded in a matrix, we numerically analyze the vibrational response of an array of bistable harmonic oscillators with stochastic spring constants. Changing the intensity of light incident on the lattice directly controls the composition of the lattice and therefore the speed of sound. Furthermore, modulation of the phonon band structure at high frequencies results in a strong confinement of phonons. The applications of this regime for phonon waveguides, vibrational energy storage, and phononic transistors is examined.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevB.92.165107
