Generation and remote detection of THz sound using semiconductor superlattices

Details Generation and remote detection of THz sound using semiconductor superlattices Generation and remote detection of THz sound using semiconductor superlattices

2007-03-26

arxiv.org/abs/cond-mat/0703680v2

Physics

Condensed Matter

Materials Science

Submitted to Applied Physics Letters

Scientific paper

10.1063/1.2754353

The authors introduce a novel approach to study the propagation of high frequency acoustic phonons in which the generation and detection involves two spatially separated superlattices $\sim 1 {\rm \mu m}$ apart. Propagating modes of frequencies up to $\sim 1 {\rm THz}$ escape from the superlattice where they are generated and reach the second superlattice where they are detected. The measured frequency spectrum reveals finite size effects, which can be accounted for by a continuum elastic model.

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