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Stimulated optomechanical excitation of surface acoustic waves in a microdevice

Author

Listed:
  • Gaurav Bahl

    (Electrical Engineering and Computer Science, University of Michigan)

  • John Zehnpfennig

    (Electrical Engineering and Computer Science, University of Michigan
    Electrical Engineering and Computer Science, United States Military Academy, West Point)

  • Matthew Tomes

    (Electrical Engineering and Computer Science, University of Michigan)

  • Tal Carmon

    (Electrical Engineering and Computer Science, University of Michigan)

Abstract

Stimulated Brillouin interaction between sound and light, known to be the strongest optical nonlinearity common to all amorphous and crystalline dielectrics, has been widely studied in fibres and bulk materials but rarely in optical microresonators. The possibility of experimentally extending this principle to excite mechanical resonances in photonic microsystems, for sensing and frequency reference applications, has remained largely unexplored. The challenge lies in the fact that microresonators inherently have large free spectral range, whereas the phase-matching considerations for the Brillouin process require optical modes of nearby frequencies but with different wave vectors. Here we rely on high-order transverse optical modes to relax this limitation and report the experimental excitation of mechanical resonances ranging from 49 to 1,400 MHz by using forward Brillouin scattering. These natural mechanical resonances are excited in ∼100 μm silica microspheres, and are of a surface-acoustic whispering-gallery type.

Suggested Citation

  • Gaurav Bahl & John Zehnpfennig & Matthew Tomes & Tal Carmon, 2011. "Stimulated optomechanical excitation of surface acoustic waves in a microdevice," Nature Communications, Nature, vol. 2(1), pages 1-6, September.
    • Handle: RePEc:nat:natcom:v:2:y:2011:i:1:d:10.1038_ncomms1412
    DOI: 10.1038/ncomms1412
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    Cited by:

    1. Gil Bashan & H. Hagai Diamandi & Elad Zehavi & Kavita Sharma & Yosef London & Avi Zadok, 2022. "A forward Brillouin fibre laser," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Arjun Iyer & Yadav P. Kandel & Wendao Xu & John M. Nichol & William H. Renninger, 2024. "Coherent optical coupling to surface acoustic wave devices," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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