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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 25 — Sep. 1, 2007
  • pp: 6247–6250

Phase shift and penetration depth of metal mirrors in a microcavity structure

Fengying Ma and Xingyuan Liu  »View Author Affiliations

Applied Optics, Vol. 46, Issue 25, pp. 6247-6250 (2007)

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Optical properties of metal films, such as phase shift on reflection or penetration depth of electromagnetic waves into mirrors, play an important role in determining the resonance wavelength of a microcavity. We created a series of λ / 2 cavities with a symmetrical structure of glass∕Ag∕lithium fluoride∕Ag by changing the thickness of the Ag film. The penetration depth at different thicknesses of Ag film was obtained from the transmittance peaks of the cavities. Phase shift on reflection at the lithium fluoride–Ag interface was calculated based on the measured optical constants. The formulation between phase shift and penetration depth was proved by experimental results, which are in good agreement with the theoretical calculations.

© 2007 Optical Society of America

OCIS Codes
(230.4040) Optical devices : Mirrors
(310.6860) Thin films : Thin films, optical properties

ToC Category:
Optical Devices

Original Manuscript: March 8, 2007
Revised Manuscript: June 30, 2007
Manuscript Accepted: July 1, 2007
Published: August 22, 2007

Fengying Ma and Xingyuan Liu, "Phase shift and penetration depth of metal mirrors in a microcavity structure," Appl. Opt. 46, 6247-6250 (2007)

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