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Optics Letters

Optics Letters


  • Vol. 30, Iss. 12 — Jun. 15, 2005
  • pp: 1527–1529

Fano resonances in prism-coupled multimode square micropillar resonators

Ho-Tong Lee, Linjie Zhou, and Andrew W. Poon  »View Author Affiliations

Optics Letters, Vol. 30, Issue 12, pp. 1527-1529 (2005)

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We report Fano resonances in a multimode square glass micropillar resonator; the resonances were obtained by using angle-resolved prism coupling. Our experiments reveal characteristically asymmetric line shapes of high-Q resonances and of detuned low-Q resonances in multimode reflection spectra. The asymmetric resonance line shapes evolve for an approximately pi phase within a 0.5° range of reflection angles. We model our observed asymmetric multimode resonances by the far-field interference between a light wave that is evanescently coupled with a high-Q mode orbit and a coherent light wave that is refractively coupled with a detuned low-Q mode orbit.

© 2005 Optical Society of America

OCIS Codes
(230.5750) Optical devices : Resonators
(260.5740) Physical optics : Resonance

Ho-Tong Lee, Linjie Zhou, and Andrew W. Poon, "Fano resonances in prism-coupled multimode square micropillar resonators," Opt. Lett. 30, 1527-1529 (2005)

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