Optically tunable acoustic wave band-pass filter

N. Swinteck, P. Lucas, P. A. Deymier

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

The acoustic properties of a hybrid composite that exhibits both photonic and phononic behavior are investigated numerically with finite-element and finite-difference time-domain simulations. The structure is constituted of a periodic array of photonic resonant cavities embedded in a background superlattice. The resonant cavities contain a photo-elastic chalcogenide glass that undergoes atomic-scale structural reorganization when irradiated with light having energy close to its band-gap. Photo-excitation of the chalcogenide glass changes its elastic properties and, consequently, augments the acoustic transmission spectrum of the composite. By modulating the intensity of light irradiating the hybrid photonic/phononic structure, the position and spectral width of phonon passing-bands can be controlled. This demonstration offers the technological platform for optically-tunable acoustic wave band-pass filters.

Original languageEnglish (US)
Article number124603
JournalAIP Advances
Volume4
Issue number12
DOIs
StatePublished - Dec 1 2014

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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