Published April 28, 2011 | Version v1
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Observation of surface-guided waves in holey hypersonic phononic crystal

Authors/Creators

  • 1. CNRS-FEMTO

Description

We observe experimentally the propagation of surface-guided waves in a hypersonic phononic crystal, both in the radiative and nonradiative regions of the spectrum. Combining electrical measurements in reflection and transmission as well as optical maps of the surface displacement, a band gap extending from 0.6 to 0.95 GHz is identified in a square lattice array of 1m radius air holes milled in lithium niobate. The optical measurements reveal the transmission of surface-guided waves above the band gap, well inside the sound cone.

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Additional details

Funding

European Commission
TAILPHOX - TAILoring photon-phonon interaction in silicon PHOXonic crystals 233883