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Phonon Bloch oscillations in acoustic-cavity structures

N. D. Lanzillotti Kimura·A. Fainstein·B. Jusserand
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Abstract

We describe a semiconductor multilayer structure based in acoustic phonon cavities and achievable with MBE technology, designed to display acoustic phonon Bloch oscillations. We show that forward and backscattering Raman spectra give a direct measure of the created phononic Wannier-Stark ladder. We also discuss the use of femtosecond laser impulsions for the generation and direct probe of the induced phonon Bloch oscillations. We propose a gedanken experiment based in an integrated phonon source-structure-detector device, and we present calculations of pump and probe time dependent optical reflectivity that evidence temporal beatings in agreement with the Wannier-Stark ladder energy splitting.

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N. D. Lanzillotti Kimura, A. Fainstein, B. Jusserand. 2004-07-19. Phonon Bloch oscillations in acoustic-cavity structures. https://doi.org/10.1103/physrevb.71.041305

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