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Updated: Jun 1, 2026

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
12:21

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

Published on: April 4, 2016

Single-input spherical microbubble resonator.

Amy Watkins1, Jonathan Ward, Yuqiang Wu

  • 1Physics Department, University College Cork, Cork, Ireland. amy.watkins@tyndall.ie

Optics Letters
|June 3, 2011
PubMed
Summary
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Researchers developed a novel optical microbubble resonator using a CO(2) laser. This device exhibits whispering gallery modes with high Q factors and demonstrates tunable filtering properties for optical applications.

Area of Science:

  • Photonics and optical engineering
  • Microscale fabrication and device engineering

Background:

  • Whispering gallery mode resonators are crucial for various optical applications.
  • Fabricating microscale resonators with controlled geometries and high quality factors remains a challenge.

Purpose of the Study:

  • To present a novel single-input whispering gallery optical microbubble resonator.
  • To demonstrate the fabrication and characterization of these microbubble resonators.

Main Methods:

  • Fabrication of spherical microbubbles (<100 μm diameter) with micrometer wall thickness using a CO(2) laser on a tapered glass capillary.
  • Excitation and characterization of optical whispering gallery modes.
  • Filling microbubbles with water and observing mode shifts.
  • Investigating Fano-type resonances with sub-wavelength optical fiber coupling.

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Fabrication of Silica Ultra High Quality Factor Microresonators
07:51

Fabrication of Silica Ultra High Quality Factor Microresonators

Published on: July 2, 2012

Related Experiment Videos

Last Updated: Jun 1, 2026

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
12:21

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

Published on: April 4, 2016

Fabrication of Silica Ultra High Quality Factor Microresonators
07:51

Fabrication of Silica Ultra High Quality Factor Microresonators

Published on: July 2, 2012

Main Results:

  • Achieved optical whispering gallery modes with high quality factors (Q ∼10^5).
  • Observed significant mode shifts (∼20 GHz) upon filling with water.
  • Demonstrated a switch from band-stop to bandpass filtering behavior due to Fano resonances with sub-wavelength fiber coupling.

Conclusions:

  • The developed microbubble resonator is a promising platform for tunable optical filtering.
  • The fabrication method allows for controlled microbubble dimensions and high-performance optical modes.
  • The observed Fano resonances offer new possibilities for advanced optical device functionalities.