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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 12 — Jun. 7, 2010
  • pp: 12615–12621

Analysis of short range forces in opto-mechanical devices with a nanogap

Wolfram H.P. Pernice, Mo Li, Daniel Garcia-Sanchez, and Hong X. Tang  »View Author Affiliations

Optics Express, Vol. 18, Issue 12, pp. 12615-12621 (2010)

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We employ the finite-difference time-domain method to calculate the dominant short range forces in optomechanical devices, Casimir and gradient optical forces. Numerical results are obtained for typical silicon optomechanical devices and are compared to metallic reference structures, taking into account geometric and frequency dispersion of silicon. Our results indicate that although a small gap is desirable for operating optomechanical devices, the Casimir force offsets the gradient force in strongly coupled optomechanical devices, which has to be taken into account in the design of optical force tunable devices.

© 2010 OSA

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(350.4238) Other areas of optics : Nanophotonics and photonic crystals
(120.4880) Instrumentation, measurement, and metrology : Optomechanics

ToC Category:
Optical Devices

Original Manuscript: May 10, 2010
Revised Manuscript: May 24, 2010
Manuscript Accepted: May 25, 2010
Published: May 27, 2010

Wolfram H. P. Pernice, Mo Li, Daniel Garcia-Sanchez, and Hong X. Tang, "Analysis of short range forces in opto-mechanical devices with a nanogap," Opt. Express 18, 12615-12621 (2010)

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