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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 18 — Aug. 30, 2010
  • pp: 18968–18974

A composite microcavity of diamond nanopillar and deformed silica microsphere with enhanced evanescent decay length

Russell J. Barbour, Khodadad N. Dinyari, and Hailin Wang  »View Author Affiliations

Optics Express, Vol. 18, Issue 18, pp. 18968-18974 (2010)

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We report the experimental realization of a composite microcavity system, in which negatively-charged nitrogen vacancy (NV) centers in diamond nanopillars couple evanescently to whispering-gallery modes (WGMs) in a deformed, non-axisymmetric silica microsphere. We show that the deformed microsphere can feature an evanescent decay length four times larger than that of a regular silica microsphere. With the enhanced evanescent coupling, WGMs can in principle couple to NV centers that are 100 to 200 nm beneath the diamond pillar surface, providing a promising avenue for exploring evanescently-coupled cavity QED systems of NV centers in ultrahigh purity diamond.

© 2010 OSA

OCIS Codes
(270.5580) Quantum optics : Quantum electrodynamics
(140.3948) Lasers and laser optics : Microcavity devices

ToC Category:
Lasers and Laser Optics

Original Manuscript: June 25, 2010
Revised Manuscript: July 27, 2010
Manuscript Accepted: July 30, 2010
Published: August 20, 2010

Russell J. Barbour, Khodadad N. Dinyari, and Hailin Wang, "A composite microcavity of diamond nanopillar and deformed silica microsphere with enhanced evanescent decay length," Opt. Express 18, 18968-18974 (2010)

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