Hypersonic acoustic mirrors and microcavities in porous silicon

Gazimagomed N Aliev, Bernhard Goller, Dmitry Kovalev, Paul A Snow

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Periodic solid state structures exhibit transmission stop bands for waves of certain frequencies. We report the realization and direct measurement of acoustic band gaps in porous silicon multilayer structures which exhibit similar to 50 dB stop bands for longitudinal acoustic waves in the gigahertz range. Furthermore, realization of an acoustic microcavity structure in porous silicon is demonstrated.
Original languageEnglish
Article number124101
Number of pages3
JournalApplied Physics Letters
Issue number12
Early online date22 Mar 2010
Publication statusPublished - 22 Mar 2010


  • acoustic wave transmission
  • elemental semiconductors
  • porous semiconductors
  • optical multilayers
  • integrated optics
  • micro-optics
  • microcavities
  • silicon
  • distributed Bragg reflectors


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