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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 16 — Jul. 30, 2012
  • pp: 18091–18096

Focused Ion Beam Engineered Whispering Gallery Mode Resonators with Open Cavity Structure

David C. Aveline, Lukas Baumgartel, Byungmin Ahn, and Nan Yu  »View Author Affiliations

Optics Express, Vol. 20, Issue 16, pp. 18091-18096 (2012)

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We report the realization of an open cavity whispering gallery mode optical resonator, in which the circulating light traverses a free space gap. We utilize focused ion beam microfabrication to precisely cut a 10 μm wide notch into the perimeter of a crystalline disc. We have shown that this modified resonator structure supports high quality modes, and demonstrated qualify factor, Q ≃ 106, limited by the notch surface roughness due to the ion milling process. Furthermore, we investigated the spatial profile of the modes inside the open cavity with a microfabricated probe mechanism. This new type of resonator structure facilitates interaction of the cavity’s optical field with mechanical resonators as well as individual atoms or molecules.

© 2012 OSA

OCIS Codes
(140.4780) Lasers and laser optics : Optical resonators
(220.4000) Optical design and fabrication : Microstructure fabrication
(220.4880) Optical design and fabrication : Optomechanics
(230.5750) Optical devices : Resonators
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Lasers and Laser Optics

Original Manuscript: July 17, 2012
Revised Manuscript: July 18, 2012
Manuscript Accepted: July 18, 2012
Published: July 23, 2012

David C. Aveline, Lukas Baumgartel, Byungmin Ahn, and Nan Yu, "Focused ion beam engineered whispering gallery mode resonators with open cavity structure," Opt. Express 20, 18091-18096 (2012)

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