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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 20 — Oct. 3, 2005
  • pp: 8286–8295

High-Q enhancement of attractive and repulsive optical forces between coupled whispering-gallery-mode resonators

M. L. Povinelli, Steven G. Johnson, Marko Lončar, Mihai Ibanescu, Elizabeth J. Smythe, Federico Capasso, and J. D. Joannopoulos  »View Author Affiliations

Optics Express, Vol. 13, Issue 20, pp. 8286-8295 (2005)

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We have calculated the optically-induced force between coupled high-Q whispering gallery modes of microsphere resonators. Attractive and repulsive forces are found, depending whether the bi-sphere mode is symmetric or antisymmetric. The magnitude of the force is linearly proportional to the total power in the spheres and consequently linearly enhanced by Q. Forces on the order of 100 nN are found for Q=108, large enough to cause displacements in the range of 1μm when the sphere is attached to a fiber stem with spring constant 0.004 N/m.

© 2005 Optical Society of America

OCIS Codes
(030.4070) Coherence and statistical optics : Modes
(130.2790) Integrated optics : Guided waves
(190.3970) Nonlinear optics : Microparticle nonlinear optics
(230.5750) Optical devices : Resonators
(290.4020) Scattering : Mie theory

ToC Category:
Research Papers

Original Manuscript: July 8, 2005
Revised Manuscript: September 23, 2005
Published: October 3, 2005

Michelle Povinelli, Steven Johnson, Marko Lonèar, Mihai Ibanescu, Elizabeth Smythe, Federico Capasso, and J. Joannopoulos, "High-Q enhancement of attractive and repulsive optical forces between coupled whispering-gallery- mode resonators," Opt. Express 13, 8286-8295 (2005)

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